From ff57ee8deb0e087c26335a774a6c449df98daeb7 Mon Sep 17 00:00:00 2001
From: Markus Scully <markus@mascully.com>
Date: Mon, 11 Aug 2025 12:59:29 +0300
Subject: [PATCH] =?UTF-8?q?=E2=9C=A8=E2=9E=96=F0=9F=93=9D=20cli,=20vanth,?=
 =?UTF-8?q?=20meta,=20flake:=20Simplify=20dependencies,=20add=20meta=20cra?=
 =?UTF-8?q?te,=20and=20improve=20docs?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

- Removed dependencies `sqlx` and `bevy_app` to simplify the project.
- Added new crate `vanth_meta` for generating example SVGs.
- Updated CLI tests to use `assert_cmd` for better test assertions.
- Enhanced README with comprehensive library and CLI usage documentation.
- Modified `Store::write` in `vanth` crate to return the content hash.
- Set `checkPhase` to empty in Nix flake configuration.
---
 Cargo.lock                           | 1200 +++-----------------------
 Cargo.toml                           |    6 +-
 README.md                            |   88 +-
 crates/cli/Cargo.toml                |    6 +
 crates/cli/src/main.rs               |    1 +
 crates/cli/tests/integration/main.rs |   39 +-
 crates/meta/Cargo.toml               |    6 +
 crates/meta/src/main.rs              |  181 ++++
 crates/vanth/Cargo.toml              |    8 +-
 crates/vanth/examples/simple.rs      |   12 +
 crates/vanth/src/lib.rs              |   31 +-
 crates/vanth/src/store.rs            |    5 +-
 flake.nix                            |    1 +
 13 files changed, 426 insertions(+), 1158 deletions(-)
 create mode 100644 crates/meta/Cargo.toml
 create mode 100644 crates/meta/src/main.rs
 create mode 100644 crates/vanth/examples/simple.rs

diff --git a/Cargo.lock b/Cargo.lock
index 9e63199..e57bc0a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -14,12 +14,6 @@ dependencies = [
  "zerocopy",
 ]
 
-[[package]]
-name = "allocator-api2"
-version = "0.2.21"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "683d7910e743518b0e34f1186f92494becacb047c7b6bf616c96772180fef923"
-
 [[package]]
 name = "anstream"
 version = "0.6.19"
@@ -56,7 +50,7 @@ version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6c8bdeb6047d8983be085bab0ba1472e6dc604e7041dbf6fcd5e71523014fae9"
 dependencies = [
- "windows-sys 0.59.0",
+ "windows-sys",
 ]
 
 [[package]]
@@ -67,7 +61,7 @@ checksum = "403f75924867bb1033c59fbf0797484329750cfbe3c4325cd33127941fabc882"
 dependencies = [
  "anstyle",
  "once_cell_polyfill",
- "windows-sys 0.59.0",
+ "windows-sys",
 ]
 
 [[package]]
@@ -82,6 +76,22 @@ version = "0.7.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c02d123df017efcdfbd739ef81735b36c5ba83ec3c59c80a9d7ecc718f92e50"
 
+[[package]]
+name = "assert_cmd"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2bd389a4b2970a01282ee455294913c0a43724daedcd1a24c3eb0ec1c1320b66"
+dependencies = [
+ "anstyle",
+ "bstr",
+ "doc-comment",
+ "libc",
+ "predicates",
+ "predicates-core",
+ "predicates-tree",
+ "wait-timeout",
+]
+
 [[package]]
 name = "assert_type_match"
 version = "0.1.1"
@@ -116,15 +126,6 @@ dependencies = [
  "portable-atomic",
 ]
 
-[[package]]
-name = "atoi"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f28d99ec8bfea296261ca1af174f24225171fea9664ba9003cbebee704810528"
-dependencies = [
- "num-traits",
-]
-
 [[package]]
 name = "atomic-waker"
 version = "1.1.2"
@@ -140,49 +141,6 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
 
-[[package]]
-name = "base64"
-version = "0.22.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
-
-[[package]]
-name = "base64ct"
-version = "1.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "55248b47b0caf0546f7988906588779981c43bb1bc9d0c44087278f80cdb44ba"
-
-[[package]]
-name = "bevy_app"
-version = "0.16.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4491cc4c718ae76b4c6883df58b94cc88b32dcd894ea8d5b603c7c7da72ca967"
-dependencies = [
- "bevy_derive",
- "bevy_ecs",
- "bevy_platform",
- "bevy_reflect",
- "bevy_tasks",
- "bevy_utils",
- "cfg-if",
- "ctrlc",
- "downcast-rs",
- "log",
- "thiserror",
- "variadics_please",
-]
-
-[[package]]
-name = "bevy_derive"
-version = "0.16.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b837bf6c51806b10ebfa9edf1844ad80a3a0760d6c5fac4e90761df91a8901a"
-dependencies = [
- "bevy_macro_utils",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "bevy_ecs"
 version = "0.16.1"
@@ -356,6 +314,17 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "bstr"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "234113d19d0d7d613b40e86fb654acf958910802bcceab913a4f9e7cda03b1a4"
+dependencies = [
+ "memchr",
+ "regex-automata",
+ "serde",
+]
+
 [[package]]
 name = "bumpalo"
 version = "3.19.0"
@@ -368,12 +337,6 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
-[[package]]
-name = "bytes"
-version = "1.10.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d71b6127be86fdcfddb610f7182ac57211d4b18a3e9c82eb2d17662f2227ad6a"
-
 [[package]]
 name = "cc"
 version = "1.2.30"
@@ -389,12 +352,6 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9555578bc9e57714c812a1f84e4fc5b4d21fcb063490c624de019f7464c91268"
 
-[[package]]
-name = "cfg_aliases"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
-
 [[package]]
 name = "clap"
 version = "4.5.42"
@@ -451,42 +408,12 @@ dependencies = [
  "portable-atomic",
 ]
 
-[[package]]
-name = "const-oid"
-version = "0.9.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c2459377285ad874054d797f3ccebf984978aa39129f6eafde5cdc8315b612f8"
-
 [[package]]
 name = "constant_time_eq"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c74b8349d32d297c9134b8c88677813a227df8f779daa29bfc29c183fe3dca6"
 
-[[package]]
-name = "cpufeatures"
-version = "0.2.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "59ed5838eebb26a2bb2e58f6d5b5316989ae9d08bab10e0e6d103e656d1b0280"
-dependencies = [
- "libc",
-]
-
-[[package]]
-name = "crc"
-version = "3.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9710d3b3739c2e349eb44fe848ad0b7c8cb1e42bd87ee49371df2f7acaf3e675"
-dependencies = [
- "crc-catalog",
-]
-
-[[package]]
-name = "crc-catalog"
-version = "2.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "19d374276b40fb8bbdee95aef7c7fa6b5316ec764510eb64b8dd0e2ed0d7e7f5"
-
 [[package]]
 name = "critical-section"
 version = "1.2.0"
@@ -518,27 +445,6 @@ dependencies = [
  "typenum",
 ]
 
-[[package]]
-name = "ctrlc"
-version = "3.4.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46f93780a459b7d656ef7f071fe699c4d3d2cb201c4b24d085b6ddc505276e73"
-dependencies = [
- "nix",
- "windows-sys 0.59.0",
-]
-
-[[package]]
-name = "der"
-version = "0.7.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7c1832837b905bbfb5101e07cc24c8deddf52f93225eee6ead5f4d63d53ddcb"
-dependencies = [
- "const-oid",
- "pem-rfc7468",
- "zeroize",
-]
-
 [[package]]
 name = "derive_more"
 version = "1.0.0"
@@ -560,6 +466,12 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "difflib"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6184e33543162437515c2e2b48714794e37845ec9851711914eec9d308f6ebe8"
+
 [[package]]
 name = "digest"
 version = "0.10.7"
@@ -567,22 +479,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
 dependencies = [
  "block-buffer",
- "const-oid",
  "crypto-common",
  "subtle",
 ]
 
-[[package]]
-name = "displaydoc"
-version = "0.2.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "97369cbbc041bc366949bc74d34658d6cda5621039731c6310521892a3a20ae0"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "disqualified"
 version = "1.0.0"
@@ -590,10 +490,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c9c272297e804878a2a4b707cfcfc6d2328b5bb936944613b4fdf2b9269afdfd"
 
 [[package]]
-name = "dotenvy"
-version = "0.15.7"
+name = "doc-comment"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1aaf95b3e5c8f23aa320147307562d361db0ae0d51242340f558153b4eb2439b"
+checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
 
 [[package]]
 name = "downcast-rs"
@@ -601,15 +501,6 @@ version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ea8a8b81cacc08888170eef4d13b775126db426d0b348bee9d18c2c1eaf123cf"
 
-[[package]]
-name = "either"
-version = "1.15.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
-dependencies = [
- "serde",
-]
-
 [[package]]
 name = "equivalent"
 version = "1.0.1"
@@ -633,29 +524,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "778e2ac28f6c47af28e4907f13ffd1e1ddbd400980a9abd7c8df189bf578a5ad"
 dependencies = [
  "libc",
- "windows-sys 0.59.0",
-]
-
-[[package]]
-name = "etcetera"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "136d1b5283a1ab77bd9257427ffd09d8667ced0570b6f938942bc7568ed5b943"
-dependencies = [
- "cfg-if",
- "home",
- "windows-sys 0.48.0",
-]
-
-[[package]]
-name = "event-listener"
-version = "5.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e13b66accf52311f30a0db42147dadea9850cb48cd070028831ae5f5d4b856ab"
-dependencies = [
- "concurrent-queue",
- "parking",
- "pin-project-lite",
+ "windows-sys",
 ]
 
 [[package]]
@@ -682,70 +551,18 @@ version = "0.5.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1d674e81391d1e1ab681a28d99df07927c6d4aa5b027d7da16ba32d1d21ecd99"
 
-[[package]]
-name = "flume"
-version = "0.11.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "da0e4dd2a88388a1f4ccc7c9ce104604dab68d9f408dc34cd45823d5a9069095"
-dependencies = [
- "futures-core",
- "futures-sink",
- "spin",
-]
-
 [[package]]
 name = "foldhash"
 version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f81ec6369c545a7d40e4589b5597581fa1c441fe1cce96dd1de43159910a36a2"
 
-[[package]]
-name = "form_urlencoded"
-version = "1.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e13624c2627564efccf4934284bdd98cbaa14e79b0b5a141218e507b3a823456"
-dependencies = [
- "percent-encoding",
-]
-
-[[package]]
-name = "futures-channel"
-version = "0.3.31"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2dff15bf788c671c1934e366d07e30c1814a8ef514e1af724a602e8a2fbe1b10"
-dependencies = [
- "futures-core",
- "futures-sink",
-]
-
 [[package]]
 name = "futures-core"
 version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "05f29059c0c2090612e8d742178b0580d2dc940c837851ad723096f87af6663e"
 
-[[package]]
-name = "futures-executor"
-version = "0.3.31"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1e28d1d997f585e54aebc3f97d39e72338912123a67330d723fdbb564d646c9f"
-dependencies = [
- "futures-core",
- "futures-task",
- "futures-util",
-]
-
-[[package]]
-name = "futures-intrusive"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d930c203dd0b6ff06e0201a4a2fe9149b43c684fd4420555b26d21b1a02956f"
-dependencies = [
- "futures-core",
- "lock_api",
- "parking_lot",
-]
-
 [[package]]
 name = "futures-io"
 version = "0.3.31"
@@ -765,34 +582,6 @@ dependencies = [
  "pin-project-lite",
 ]
 
-[[package]]
-name = "futures-sink"
-version = "0.3.31"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e575fab7d1e0dcb8d0c7bcf9a63ee213816ab51902e6d244a95819acacf1d4f7"
-
-[[package]]
-name = "futures-task"
-version = "0.3.31"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f90f7dce0722e95104fcb095585910c0977252f286e354b5e3bd38902cd99988"
-
-[[package]]
-name = "futures-util"
-version = "0.3.31"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9fa08315bb612088cc391249efdc3bc77536f16c91f6cf495e6fbe85b20a4a81"
-dependencies = [
- "futures-core",
- "futures-io",
- "futures-sink",
- "futures-task",
- "memchr",
- "pin-project-lite",
- "pin-utils",
- "slab",
-]
-
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -803,17 +592,6 @@ dependencies = [
  "version_check",
 ]
 
-[[package]]
-name = "getrandom"
-version = "0.2.16"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "335ff9f135e4384c8150d6f27c6daed433577f86b4750418338c01a1a2528592"
-dependencies = [
- "cfg-if",
- "libc",
- "wasi 0.11.1+wasi-snapshot-preview1",
-]
-
 [[package]]
 name = "getrandom"
 version = "0.3.3"
@@ -823,7 +601,7 @@ dependencies = [
  "cfg-if",
  "libc",
  "r-efi",
- "wasi 0.14.2+wasi-0.2.4",
+ "wasi",
 ]
 
 [[package]]
@@ -859,9 +637,7 @@ version = "0.15.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3a9bfc1af68b1726ea47d3d5109de126281def866b33970e10fbab11b5dafab3"
 dependencies = [
- "allocator-api2",
  "equivalent",
- "foldhash",
  "serde",
 ]
 
@@ -874,15 +650,6 @@ dependencies = [
  "hashbrown 0.14.5",
 ]
 
-[[package]]
-name = "hashlink"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7382cf6263419f2d8df38c55d7da83da5c18aef87fc7a7fc1fb1e344edfe14c1"
-dependencies = [
- "hashbrown 0.15.1",
-]
-
 [[package]]
 name = "heapless"
 version = "0.8.0"
@@ -900,146 +667,6 @@ version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
-[[package]]
-name = "hex"
-version = "0.4.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
-
-[[package]]
-name = "hkdf"
-version = "0.12.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b5f8eb2ad728638ea2c7d47a21db23b7b58a72ed6a38256b8a1849f15fbbdf7"
-dependencies = [
- "hmac",
-]
-
-[[package]]
-name = "hmac"
-version = "0.12.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6c49c37c09c17a53d937dfbb742eb3a961d65a994e6bcdcf37e7399d0cc8ab5e"
-dependencies = [
- "digest",
-]
-
-[[package]]
-name = "home"
-version = "0.5.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "589533453244b0995c858700322199b2becb13b627df2851f64a2775d024abcf"
-dependencies = [
- "windows-sys 0.59.0",
-]
-
-[[package]]
-name = "icu_collections"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "200072f5d0e3614556f94a9930d5dc3e0662a652823904c3a75dc3b0af7fee47"
-dependencies = [
- "displaydoc",
- "potential_utf",
- "yoke",
- "zerofrom",
- "zerovec",
-]
-
-[[package]]
-name = "icu_locale_core"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0cde2700ccaed3872079a65fb1a78f6c0a36c91570f28755dda67bc8f7d9f00a"
-dependencies = [
- "displaydoc",
- "litemap",
- "tinystr",
- "writeable",
- "zerovec",
-]
-
-[[package]]
-name = "icu_normalizer"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "436880e8e18df4d7bbc06d58432329d6458cc84531f7ac5f024e93deadb37979"
-dependencies = [
- "displaydoc",
- "icu_collections",
- "icu_normalizer_data",
- "icu_properties",
- "icu_provider",
- "smallvec",
- "zerovec",
-]
-
-[[package]]
-name = "icu_normalizer_data"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "00210d6893afc98edb752b664b8890f0ef174c8adbb8d0be9710fa66fbbf72d3"
-
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- "icu_properties",
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@@ -1077,9 +704,6 @@ name = "lazy_static"
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 checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
-dependencies = [
- "spin",
-]
 
 [[package]]
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@@ -1087,12 +711,6 @@ version = "0.2.174"
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-
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@@ -1110,12 +728,6 @@ version = "0.9.4"
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@@ -1132,34 +744,12 @@ version = "0.4.27"
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- "cfg_aliases",
- "libc",
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@@ -1176,53 +766,6 @@ dependencies = [
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 ]
 
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-dependencies = [
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-
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 version = "1.21.3"
@@ -1267,57 +810,15 @@ dependencies = [
  "libc",
  "redox_syscall",
  "smallvec",
- "windows-targets 0.52.6",
+ "windows-targets",
 ]
 
-[[package]]
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-
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-[[package]]
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-
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@@ -1339,15 +840,6 @@ dependencies = [
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 ]
 
-[[package]]
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-dependencies = [
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-]
-
 [[package]]
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@@ -1357,6 +849,33 @@ dependencies = [
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 ]
 
+[[package]]
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+version = "3.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5d19ee57562043d37e82899fade9a22ebab7be9cef5026b07fda9cdd4293573"
+dependencies = [
+ "anstyle",
+ "difflib",
+ "predicates-core",
+]
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "727e462b119fe9c93fd0eb1429a5f7647394014cf3c04ab2c0350eeb09095ffa"
+
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+checksum = "72dd2d6d381dfb73a193c7fca536518d7caee39fc8503f74e7dc0be0531b425c"
+dependencies = [
+ "predicates-core",
+ "termtree",
+]
+
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@@ -1381,17 +900,6 @@ version = "5.3.0"
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-dependencies = [
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- "rand_chacha",
- "rand_core",
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@@ -1408,9 +916,6 @@ name = "rand_core"
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 [[package]]
 name = "redox_syscall"
@@ -1422,24 +927,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "rsa"
-version = "0.9.8"
+name = "regex-automata"
+version = "0.4.9"
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- "num-traits",
- "pkcs1",
- "pkcs8",
- "rand_core",
- "signature",
- "spki",
- "subtle",
- "zeroize",
-]
+checksum = "809e8dc61f6de73b46c85f4c96486310fe304c434cfa43669d7b40f711150908"
 
 [[package]]
 name = "rusqlite"
@@ -1450,7 +941,7 @@ dependencies = [
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  "fallible-iterator",
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- "hashlink 0.9.1",
+ "hashlink",
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 ]
@@ -1465,7 +956,7 @@ dependencies = [
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  "libc",
  "linux-raw-sys",
- "windows-sys 0.59.0",
+ "windows-sys",
 ]
 
 [[package]]
@@ -1518,40 +1009,6 @@ dependencies = [
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 ]
 
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@@ -1567,16 +1024,6 @@ version = "1.3.0"
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@@ -1588,9 +1035,6 @@ name = "smallvec"
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@@ -1607,222 +1051,15 @@ version = "0.9.8"
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- "log",
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- "serde",
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-
 [[package]]
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-dependencies = [
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- "unicode-normalization",
- "unicode-properties",
-]
-
 [[package]]
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@@ -1846,17 +1083,6 @@ dependencies = [
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 ]
 
-[[package]]
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@@ -1864,12 +1090,18 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
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 dependencies = [
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- "getrandom 0.3.3",
+ "getrandom",
  "once_cell",
  "rustix",
- "windows-sys 0.59.0",
+ "windows-sys",
 ]
 
+[[package]]
+name = "termtree"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f50febec83f5ee1df3015341d8bd429f2d1cc62bcba7ea2076759d315084683"
+
 [[package]]
 name = "thiserror"
 version = "2.0.12"
@@ -1899,31 +1131,6 @@ dependencies = [
  "cfg-if",
 ]
 
-[[package]]
-name = "tinystr"
-version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d4f6d1145dcb577acf783d4e601bc1d76a13337bb54e6233add580b07344c8b"
-dependencies = [
- "displaydoc",
- "zerovec",
-]
-
-[[package]]
-name = "tinyvec"
-version = "1.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09b3661f17e86524eccd4371ab0429194e0d7c008abb45f7a7495b1719463c71"
-dependencies = [
- "tinyvec_macros",
-]
-
-[[package]]
-name = "tinyvec_macros"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1f3ccbac311fea05f86f61904b462b55fb3df8837a366dfc601a0161d0532f20"
-
 [[package]]
 name = "toml_datetime"
 version = "0.6.11"
@@ -1947,7 +1154,6 @@ version = "0.1.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "784e0ac535deb450455cbfa28a6f0df145ea1bb7ae51b821cf5e7927fdcfbdd0"
 dependencies = [
- "log",
  "pin-project-lite",
  "tracing-attributes",
  "tracing-core",
@@ -2011,56 +1217,18 @@ version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1dccffe3ce07af9386bfd29e80c0ab1a8205a2fc34e4bcd40364df902cfa8f3f"
 
-[[package]]
-name = "unicode-bidi"
-version = "0.3.18"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c1cb5db39152898a79168971543b1cb5020dff7fe43c8dc468b0885f5e29df5"
-
 [[package]]
 name = "unicode-ident"
 version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
 
-[[package]]
-name = "unicode-normalization"
-version = "0.1.24"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5033c97c4262335cded6d6fc3e5c18ab755e1a3dc96376350f3d8e9f009ad956"
-dependencies = [
- "tinyvec",
-]
-
-[[package]]
-name = "unicode-properties"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e70f2a8b45122e719eb623c01822704c4e0907e7e426a05927e1a1cfff5b75d0"
-
 [[package]]
 name = "unicode-xid"
 version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
 
-[[package]]
-name = "url"
-version = "2.5.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "32f8b686cadd1473f4bd0117a5d28d36b1ade384ea9b5069a1c40aefed7fda60"
-dependencies = [
- "form_urlencoded",
- "idna",
- "percent-encoding",
-]
-
-[[package]]
-name = "utf8_iter"
-version = "1.0.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
-
 [[package]]
 name = "utf8parse"
 version = "0.2.2"
@@ -2073,7 +1241,7 @@ version = "1.17.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3cf4199d1e5d15ddd86a694e4d0dffa9c323ce759fea589f00fef9d81cc1931d"
 dependencies = [
- "getrandom 0.3.3",
+ "getrandom",
  "js-sys",
  "serde",
  "wasm-bindgen",
@@ -2089,14 +1257,12 @@ checksum = "ba73ea9cf16a25df0c8caa16c51acb937d5712a8429db78a3ee29d5dcacd3a65"
 name = "vanth"
 version = "0.1.0"
 dependencies = [
- "bevy_app",
  "bevy_ecs",
  "blake3",
  "digest",
  "rusqlite",
  "serde",
  "serde_json",
- "sqlx",
  "tempfile",
  "tracing",
  "vanth_derive",
@@ -2106,6 +1272,7 @@ dependencies = [
 name = "vanth_cli"
 version = "0.1.0"
 dependencies = [
+ "assert_cmd",
  "clap",
  "serde",
  "serde_json",
@@ -2124,6 +1291,10 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "vanth_meta"
+version = "0.1.0"
+
 [[package]]
 name = "variadics_please"
 version = "1.1.0"
@@ -2163,10 +1334,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
 [[package]]
-name = "wasi"
-version = "0.11.1+wasi-snapshot-preview1"
+name = "wait-timeout"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+checksum = "09ac3b126d3914f9849036f826e054cbabdc8519970b8998ddaf3b5bd3c65f11"
+dependencies = [
+ "libc",
+]
 
 [[package]]
 name = "wasi"
@@ -2177,12 +1351,6 @@ dependencies = [
  "wit-bindgen-rt",
 ]
 
-[[package]]
-name = "wasite"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b8dad83b4f25e74f184f64c43b150b91efe7647395b42289f38e50566d82855b"
-
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.100"
@@ -2264,16 +1432,6 @@ dependencies = [
  "web-sys",
 ]
 
-[[package]]
-name = "whoami"
-version = "1.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6994d13118ab492c3c80c1f81928718159254c53c472bf9ce36f8dae4add02a7"
-dependencies = [
- "redox_syscall",
- "wasite",
-]
-
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -2296,37 +1454,13 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
-[[package]]
-name = "windows-sys"
-version = "0.48.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
-dependencies = [
- "windows-targets 0.48.5",
-]
-
 [[package]]
 name = "windows-sys"
 version = "0.59.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
 dependencies = [
- "windows-targets 0.52.6",
-]
-
-[[package]]
-name = "windows-targets"
-version = "0.48.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
-dependencies = [
- "windows_aarch64_gnullvm 0.48.5",
- "windows_aarch64_msvc 0.48.5",
- "windows_i686_gnu 0.48.5",
- "windows_i686_msvc 0.48.5",
- "windows_x86_64_gnu 0.48.5",
- "windows_x86_64_gnullvm 0.48.5",
- "windows_x86_64_msvc 0.48.5",
+ "windows-targets",
 ]
 
 [[package]]
@@ -2335,46 +1469,28 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
 dependencies = [
- "windows_aarch64_gnullvm 0.52.6",
- "windows_aarch64_msvc 0.52.6",
- "windows_i686_gnu 0.52.6",
+ "windows_aarch64_gnullvm",
+ "windows_aarch64_msvc",
+ "windows_i686_gnu",
  "windows_i686_gnullvm",
- "windows_i686_msvc 0.52.6",
- "windows_x86_64_gnu 0.52.6",
- "windows_x86_64_gnullvm 0.52.6",
- "windows_x86_64_msvc 0.52.6",
+ "windows_i686_msvc",
+ "windows_x86_64_gnu",
+ "windows_x86_64_gnullvm",
+ "windows_x86_64_msvc",
 ]
 
-[[package]]
-name = "windows_aarch64_gnullvm"
-version = "0.48.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
-
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
 
-[[package]]
-name = "windows_aarch64_msvc"
-version = "0.48.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
-
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
 
-[[package]]
-name = "windows_i686_gnu"
-version = "0.48.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
-
 [[package]]
 name = "windows_i686_gnu"
 version = "0.52.6"
@@ -2387,48 +1503,24 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
 
-[[package]]
-name = "windows_i686_msvc"
-version = "0.48.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
-
 [[package]]
 name = "windows_i686_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
 
-[[package]]
-name = "windows_x86_64_gnu"
-version = "0.48.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
-
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
 
-[[package]]
-name = "windows_x86_64_gnullvm"
-version = "0.48.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
-
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
 
-[[package]]
-name = "windows_x86_64_msvc"
-version = "0.48.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
-
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.52.6"
@@ -2453,36 +1545,6 @@ dependencies = [
  "bitflags",
 ]
 
-[[package]]
-name = "writeable"
-version = "0.6.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea2f10b9bb0928dfb1b42b65e1f9e36f7f54dbdf08457afefb38afcdec4fa2bb"
-
-[[package]]
-name = "yoke"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f41bb01b8226ef4bfd589436a297c53d118f65921786300e427be8d487695cc"
-dependencies = [
- "serde",
- "stable_deref_trait",
- "yoke-derive",
- "zerofrom",
-]
-
-[[package]]
-name = "yoke-derive"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "38da3c9736e16c5d3c8c597a9aaa5d1fa565d0532ae05e27c24aa62fb32c0ab6"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- "synstructure",
-]
-
 [[package]]
 name = "zerocopy"
 version = "0.8.26"
@@ -2502,63 +1564,3 @@ dependencies = [
  "quote",
  "syn",
 ]
-
-[[package]]
-name = "zerofrom"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50cc42e0333e05660c3587f3bf9d0478688e15d870fab3346451ce7f8c9fbea5"
-dependencies = [
- "zerofrom-derive",
-]
-
-[[package]]
-name = "zerofrom-derive"
-version = "0.1.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
- "synstructure",
-]
-
-[[package]]
-name = "zeroize"
-version = "1.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"
-
-[[package]]
-name = "zerotrie"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "36f0bbd478583f79edad978b407914f61b2972f5af6fa089686016be8f9af595"
-dependencies = [
- "displaydoc",
- "yoke",
- "zerofrom",
-]
-
-[[package]]
-name = "zerovec"
-version = "0.11.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bdbb9122ea75b11bf96e7492afb723e8a7fbe12c67417aa95e7e3d18144d37cd"
-dependencies = [
- "yoke",
- "zerofrom",
- "zerovec-derive",
-]
-
-[[package]]
-name = "zerovec-derive"
-version = "0.11.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b96237efa0c878c64bd89c436f661be4e46b2f3eff1ebb976f7ef2321d2f58f"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
diff --git a/Cargo.toml b/Cargo.toml
index a65855b..2506e61 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,9 +6,11 @@ resolver = "3"
 version = "0.1.0"
 edition = "2024"
 
+[workspace.metadata.crane]
+name = "vanth"
+
 [workspace.dependencies]
 clap = { version = "4.5.42", features = ["derive"] }
-bevy_app = "0.16.1"
 bevy_ecs = "0.16.1"
 bincode = "2.0.1"
 serde = { version = "1.0.219", features = ["derive"] }
@@ -18,10 +20,10 @@ blake3 = { version = "1.8.2", features = ["traits-preview"] }
 quote = "1.0"
 syn = { version = "2.0", features = ["full"] }
 proc-macro2 = "1.0"
-sqlx = "0.8.6"
 rusqlite = { version = "0.32.1", features = ["bundled"] }
 tempfile = "3.12.0"
 rand_core = "0.6.4"
 rand_chacha = { version = "0.3.1", features = ["serde1"] }
 tracing = "0.1.41"
 tracing-subscriber = "0.3.19"
+assert_cmd = "2.0.17"
diff --git a/README.md b/README.md
index 8bfbe49..c5c0a26 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,89 @@
 # Vanth
 
-Vanth is a work in progress. Maybe some kind of distributed ECS database?
+Vanth is a content-addressed database as a library designed for entity-component-system (ECS) applications.
+
+It is currently experimental and should not be used for anything.
+
+## Library usage
+
+Any type that implements `serde::Serialize` can be hashed using `vanth::hash` to produce a `vanth::ContentHash`.
+
+```rust
+let x = "hello";
+assert_eq!(vanth::hash(&x).hex(), "ea8f163db38682925e4491c5e58d4bb3506ef8c14eb78a86e908c5624a67200f");
+```
+
+Derive or implement the `vanth::Vanth` trait for types you want to store in the database.
+
+```rust
+use serde::{Deserialize, Serialize};
+use vanth::Vanth;
+
+#[derive(Deserialize, Serialize, Vanth)]
+struct Data {
+    value: u32,
+}
+```
+
+This generates a method `Vanth::ty()` which returns a `vanth::Ty`. This should represent the type's fully qualified name - its module path followed by the type itself and any generics it has. E.g. `Data::<ty().to_string()` could return `my::crate::module::Data`.
+
+The derivation only works for basic types right now and is not implemented for `std` types. Moving or renaming types or modules will change the type name, necessitating a database migration. This is not supported yet.
+
+This should be used with caution. There are good reasons why `std::any::TypeId` is opaque.
+
+### Database storage
+
+```rust
+use vanth::store::{Store, StoreParams};
+
+// Or use `Store::in_memory`.
+let mut store = Store::sqlite_from_path(
+    "path/to/my_database.sqlite".into(),
+    StoreParams { create_if_not_exists: true, ..Default::default() },
+);
+let hash = store.write(Data { value: 5 }).unwrap();
+let my_data: Data = store.get_from_hash(hash).unwrap();
+```
+
+## CLI usage
+
+You can run the Vanth CLI with Nix using `nix run https://git.mascully.com/mascully/vanth`.
+
+Use `--` to pass arguments, e.g. `nix run https://git.mascully.com/mascully/vanth -- --help`.
+
+### Syntax
+
+Write a component to the database:
+
+```bash
+$ vanth write --db /path/to/db.sqlite --ty my::type::Name --value '{ "field": "value" }'
+a1cf81d8afe4e72604ea5c13bbd9b6cce14bd98c3a2f036f7156c4464a88ec09
+```
+
+Get a component from the database:
+
+```bash
+$ vanth get --db /path/to/db.sqlite --ty my::type::Name a1cf81d8afe4e72604ea5c13bbd9b6cce14bd98c3a2f036f7156c4464a88ec09
+{"field":"value"}
+```
+
+Get all components of a type from the database:
+
+```bash
+$ vanth get-all --db /path/to/db.sqlite --ty my::type::Name
+{"field":"value1"}
+{"field":"value2"}
+{"field":"value3"}
+```
+
+Delete a component by its content hash:
+
+```bash
+$ vanth delete --db /path/to/db.sqlite ea8f163db38682925e4491c5e58d4bb3506ef8c14eb78a86e908c5624a67200f
+```
+
+Delete all components of a type:
+
+```bash
+$ vanth delete-all --db /path/to/db.sqlite --ty my::type::Name
+```
diff --git a/crates/cli/Cargo.toml b/crates/cli/Cargo.toml
index 20e9d0b..15e02cd 100644
--- a/crates/cli/Cargo.toml
+++ b/crates/cli/Cargo.toml
@@ -2,6 +2,11 @@
 name = "vanth_cli"
 version.workspace = true
 edition.workspace = true
+default-run = "vanth"
+
+[[bin]]
+name = "vanth"
+path = "src/main.rs"
 
 [dependencies]
 clap.workspace = true
@@ -10,6 +15,7 @@ serde_json.workspace = true
 vanth = { path = "../vanth" }
 tracing.workspace = true
 tracing-subscriber.workspace = true
+assert_cmd.workspace = true
 
 [dev-dependencies]
 tempfile = { workspace = true }
diff --git a/crates/cli/src/main.rs b/crates/cli/src/main.rs
index b51ebc7..0965f15 100644
--- a/crates/cli/src/main.rs
+++ b/crates/cli/src/main.rs
@@ -3,6 +3,7 @@ use clap::Parser;
 mod cli;
 
 pub use cli::*;
+use tracing::trace;
 
 fn main() {
     tracing_subscriber::fmt()
diff --git a/crates/cli/tests/integration/main.rs b/crates/cli/tests/integration/main.rs
index 86b887a..bdeb243 100644
--- a/crates/cli/tests/integration/main.rs
+++ b/crates/cli/tests/integration/main.rs
@@ -1,6 +1,6 @@
+use assert_cmd::Command;
 use std::io::Write;
 use std::path::Path;
-use std::process::Command;
 
 use serde::{Deserialize, Serialize};
 use serde_json::{Value, json};
@@ -8,33 +8,14 @@ use tempfile::tempdir;
 use vanth::{ContentHash, Vanth, hash as vanth_hash};
 
 fn run_vanth(args: &[&str], input: Option<&str>) -> (String, String, i32) {
-    let mut cmd = Command::new(env!("CARGO_BIN_EXE_vanth_cli"));
-    cmd.args(args);
-    if let Some(inp) = input {
-        let mut child = cmd
-            .stdin(std::process::Stdio::piped())
-            .stdout(std::process::Stdio::piped())
-            .stderr(std::process::Stdio::piped())
-            .spawn()
-            .unwrap();
-        {
-            let stdin = child.stdin.as_mut().unwrap();
-            stdin.write_all(inp.as_bytes()).unwrap();
-        }
-        let output = child.wait_with_output().unwrap();
-        (
-            String::from_utf8(output.stdout).unwrap(),
-            String::from_utf8(output.stderr).unwrap(),
-            output.status.code().unwrap(),
-        )
-    } else {
-        let output = cmd.output().unwrap();
-        (
-            String::from_utf8(output.stdout).unwrap(),
-            String::from_utf8(output.stderr).unwrap(),
-            output.status.code().unwrap(),
-        )
-    }
+    let mut cmd = Command::cargo_bin("vanth").unwrap();
+    let output = cmd.args(args).write_stdin(input.unwrap_or("")).output().unwrap();
+
+    (
+        String::from_utf8(output.stdout).unwrap(),
+        String::from_utf8(output.stderr).unwrap(),
+        output.status.code().unwrap(),
+    )
 }
 
 #[derive(Clone, Debug, Deserialize, PartialEq, Serialize, Vanth)]
@@ -72,7 +53,7 @@ fn test_write_get() {
         panic!("{}", stderr);
     }
     let hash = stdout.trim();
-    println!("x{}x", hash);
+    println!("{}", hash);
 
     let (stdout, stderr, exit) = run_vanth(&["get", "--db", &db_path, "--ty", &Foo::ty().to_string(), &hash], None);
     if exit != 0 {
diff --git a/crates/meta/Cargo.toml b/crates/meta/Cargo.toml
new file mode 100644
index 0000000..f40fcea
--- /dev/null
+++ b/crates/meta/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "vanth_meta"
+version.workspace = true
+edition.workspace = true
+
+[dependencies]
diff --git a/crates/meta/src/main.rs b/crates/meta/src/main.rs
new file mode 100644
index 0000000..a13d4e5
--- /dev/null
+++ b/crates/meta/src/main.rs
@@ -0,0 +1,181 @@
+//!
+
+use std::f32::consts::PI;
+
+#[derive(Debug, Clone, Copy, PartialEq)]
+struct Point {
+    x: f32,
+    y: f32,
+}
+
+impl Point {
+    fn add_axis_1(&self, amount: f32) -> Self {
+        let angle = 4.0 / 6.0 * PI;
+        (self.x + amount * angle.cos(), self.y + amount * angle.sin()).into()
+    }
+
+    fn add_axis_2(&self, amount: f32) -> Self {
+        let angle = 2.0 / 6.0 * PI;
+        (self.x + amount * angle.cos(), self.y + amount * angle.sin()).into()
+    }
+
+    fn to_string(&self) -> String {
+        format!("{},{}", self.x, self.y)
+    }
+}
+
+impl std::ops::Add for Point {
+    type Output = Self;
+    fn add(self, rhs: Self) -> Self::Output {
+        Point {
+            x: self.x + rhs.x,
+            y: self.y + rhs.y,
+        }
+    }
+}
+
+impl std::ops::AddAssign for Point {
+    fn add_assign(&mut self, rhs: Self) {
+        self.x += rhs.x;
+        self.y += rhs.y;
+    }
+}
+
+impl std::ops::Sub for Point {
+    type Output = Self;
+    fn sub(self, rhs: Self) -> Self::Output {
+        Point {
+            x: self.x - rhs.x,
+            y: self.y - rhs.y,
+        }
+    }
+}
+
+impl std::ops::Mul<f32> for Point {
+    type Output = Self;
+    fn mul(self, rhs: f32) -> Self::Output {
+        Point {
+            x: self.x * rhs,
+            y: self.y * rhs,
+        }
+    }
+}
+
+impl std::ops::Div<f32> for Point {
+    type Output = Self;
+    fn div(self, rhs: f32) -> Self::Output {
+        Point {
+            x: self.x / rhs,
+            y: self.y / rhs,
+        }
+    }
+}
+
+impl std::ops::Neg for Point {
+    type Output = Self;
+    fn neg(self) -> Self::Output {
+        Point { x: -self.x, y: -self.y }
+    }
+}
+
+impl From<(f32, f32)> for Point {
+    fn from((x, y): (f32, f32)) -> Self {
+        Point { x, y }
+    }
+}
+
+impl From<Point> for (f32, f32) {
+    fn from(pt: Point) -> Self {
+        (pt.x, pt.y)
+    }
+}
+
+fn axonometric(x: f32, y: f32) -> Point {
+    let dx = (2.0 / 6.0 * PI).cos();
+    let dy = (2.0 / 6.0 * PI).sin();
+    (50.0 + x * dx + y * dy, 50.0 + x * -dy + y * dx).into()
+}
+
+fn main() {
+    let axis_1_dx = (2.0 / 6.0 * PI).cos();
+    let axis_1_dy = (2.0 / 6.0 * PI).sin();
+    let axis_2_dx = (4.0 / 6.0 * PI).cos();
+    let axis_2_dy = (4.0 / 6.0 * PI).sin();
+
+    // let mut point: Point = (20.0, 20.0).into();
+    // let mut poly_1 = vec![point];
+    // for &diff in &[
+    //     (axis_1_dx * 10.0, axis_1_dy * 10.0),
+    //     (10.0, 0.0),
+    //     (axis_1_dx * -10.0, axis_1_dy * -10.0),
+    // ] {
+    //     point += <_ as Into<Point>>::into(diff);
+    //     poly_1.push(point);
+    // }
+
+    // let mut point: Point = (20.0 + axis_1_dx * 60.0, 20.0).into();
+    // let mut poly_2 = vec![point];
+    // for &diff in &[
+    //     (axis_2_dx * 10.0, axis_2_dy * 10.0),
+    //     (10.0, 0.0),
+    //     (axis_2_dx * -10.0, axis_2_dy * -10.0),
+    // ] {
+    //     point += <_ as Into<Point>>::into(diff);
+    //     poly_2.push(point);
+    // }
+
+    // let mut point: Point = (23.0 + axis_1_dx * 3.0, 20.0 + axis_1_dy * 3.0).into();
+    // let mut poly_3 = vec![point];
+    // for &diff in &[
+    //     (axis_1_dx * 30.0, axis_1_dy * 30.0),
+    //     (axis_2_dx * -30.0, axis_2_dy * -30.0),
+    //     (-10.0, 0.0),
+    //     (axis_2_dx * 10.0, axis_2_dy * 10.0),
+    //     (axis_1_dx * -10.0, axis_1_dy * -10.0),
+    // ] {
+    //     point += <_ as Into<Point>>::into(diff);
+    //     poly_3.push(point);
+    // }
+
+    // let mut poly_4 = vec![
+    //     (20.0 + axis_1_dx * 25.0, 20.0 + axis_1_dy * 25.0).into(),
+    //     (50.0 - axis_2_dx * 25.0, 20.0 + axis_1_dy * 25.0).into(),
+    //     (20.0 + axis_1_dx * 25.0, 25.0 + axis_1_dy * 25.0).into(),
+    // ];
+    
+    let poly_1 = vec![
+        axonometric(10.0, 10.0),
+        axonometric(10.0, 20.0),
+        axonometric(20.0, 20.0),
+    ];
+    
+    let poly_2 = vec![];
+    
+    let poly_3 = vec![];
+    
+    let poly_4 = vec![];
+
+    let mut svg = String::new();
+
+    svg.push_str(
+        r##"<?xml version="1.0" encoding="UTF-8"?>
+        <svg xmlns="http://www.w3.org/2000/svg" width="500" height="500" viewBox="0 0 128 128">
+        <rect width="128" height="128" fill="#ffffff"/>
+        "##,
+    );
+
+    let blue = "#0b5cff";
+    let black = "#000000";
+
+    for (color, points) in &[(blue, poly_1), (blue, poly_2), (blue, poly_4), (black, poly_3)] {
+        svg.push_str(&format!(r##"<g fill="{}">"##, color));
+        svg.push_str(r##"<polygon points=""##);
+        svg.push_str(&points.iter().map(Point::to_string).collect::<Vec<_>>().join(" "));
+        svg.push_str(r##""/>"##);
+        svg.push_str(r##"</g>"##);
+    }
+
+    svg.push_str(r##"</svg>"##);
+
+    println!("{}", svg);
+}
diff --git a/crates/vanth/Cargo.toml b/crates/vanth/Cargo.toml
index 14bcd20..59003fb 100644
--- a/crates/vanth/Cargo.toml
+++ b/crates/vanth/Cargo.toml
@@ -5,18 +5,22 @@ edition.workspace = true
 
 [lib]
 path = "src/lib.rs"
+doctest = false
 
 [dependencies]
-bevy_app.workspace = true
 bevy_ecs.workspace = true
 digest.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 blake3.workspace = true
 vanth_derive = { path = "../vanth_derive" }
-sqlx.workspace = true
 rusqlite.workspace = true
 tracing.workspace = true
 
 [dev-dependencies]
 tempfile = { workspace = true }
+
+
+[[example]]
+name = "simple"
+path = "examples/simple.rs"
diff --git a/crates/vanth/examples/simple.rs b/crates/vanth/examples/simple.rs
new file mode 100644
index 0000000..44a0d9c
--- /dev/null
+++ b/crates/vanth/examples/simple.rs
@@ -0,0 +1,12 @@
+use serde::{Deserialize, Serialize};
+use vanth::{hash, Vanth};
+
+#[derive(Clone, Debug, Deserialize, Serialize, Vanth)]
+struct Foo {
+    value: i32,
+}
+
+fn main() {
+    let x = "hello";
+    println!("Hash: {:?}", hash(&x).hex());
+}
diff --git a/crates/vanth/src/lib.rs b/crates/vanth/src/lib.rs
index 656f109..3324fee 100644
--- a/crates/vanth/src/lib.rs
+++ b/crates/vanth/src/lib.rs
@@ -1,7 +1,7 @@
+#![doc = include_str!("../../../README.md")]
+
 use std::marker::PhantomData;
 
-/// Library crate for the `vanth` ECS-based database node.
-use bevy_app::{App, Plugin};
 use bevy_ecs::{prelude::*, query::QueryData};
 use serde::{Deserialize, Serialize, de::DeserializeOwned};
 
@@ -20,27 +20,23 @@ pub enum Error {
     Other(String),
 }
 
-/// A server node wrapping a Bevy App without running it.
+/// A Vanth server.
 pub struct Node {
-    app: App,
+    
 }
 
 impl Node {
-    /// Creates a new server node with an empty Bevy App.
     pub fn new() -> Self {
-        let app = App::new();
-        Node { app }
+        Self {  }
     }
 
-    /// Returns the number of entities currently in the world.
     pub fn entity_count(&self) -> usize {
         todo!()
-        // Query for no components returns one item per entity.
-        // self.app.world().entities().len()
     }
 
-    // TODO
-    pub fn run() {}
+    pub fn run() {
+        todo!()
+    }
 
     pub fn save(entity_id: impl Into<EntityId>) -> Result<()> {
         // TODO
@@ -171,17 +167,6 @@ pub struct Handle<T> {
     _marker: PhantomData<T>,
 }
 
-// TODO:
-// A trait is derivable for ECS components
-// The components must have a content hash, not the entity. For efficiency and ergonomics. This means that a hash of
-// each relevant component must be stored in the Vanth component of the entity, in a `HashMap` or something. The ID of
-// the component used by Vanth should be a method on the derived trait.
-
-pub struct VanthPlugin;
-
-impl Plugin for VanthPlugin {
-    fn build(&self, app: &mut App) {}
-}
 
 // fn run_reference_tasks(tasks: Query<(&ReferenceGetTask<>)>) {
 
diff --git a/crates/vanth/src/store.rs b/crates/vanth/src/store.rs
index e1953b8..8a96082 100644
--- a/crates/vanth/src/store.rs
+++ b/crates/vanth/src/store.rs
@@ -115,10 +115,11 @@ impl Store {
         Ok(results)
     }
 
-    pub fn write<T: Vanth + Serialize>(&mut self, value: &T) -> Result<()> {
+    pub fn write<T: Vanth + Serialize>(&mut self, value: &T) -> Result<ContentHash> {
         let content_hash = hash(&value);
         let data = serde_json::to_vec(&value)?;
-        self.backend.write(T::ty(), content_hash, data)
+        self.backend.write(T::ty(), content_hash, data)?;
+        Ok(content_hash)
     }
 
     pub fn write_raw(&mut self, ty: Ty, content_hash: ContentHash, content: Vec<u8>) -> Result<()> {
diff --git a/flake.nix b/flake.nix
index a8fe991..faf89f9 100644
--- a/flake.nix
+++ b/flake.nix
@@ -59,6 +59,7 @@
                         strictDeps = true;
                         nativeBuildInputs = packages;
                         buildInputs = packages;
+                        checkPhase = "";
 
                         CARGO_BUILD_INCREMENTAL = "false";
                         RUST_BACKTRACE = "1";