From aae065cb3e9c8b2fcf0dd63bf451e3449a58752b Mon Sep 17 00:00:00 2001
From: Artemis Tosini <artemis.tosini@obsidian.systems>
Date: Wed, 14 Jan 2026 14:44:33 -0500
Subject: [PATCH 1/3] Add conversions for `StorePath` to harmonia

Only enabled with new feature "harmonia" due to harmonia's state of
flux.
---
 Cargo.lock                                    | 898 +++++++++++++++++-
 nix-bindings-store/Cargo.toml                 |   4 +
 nix-bindings-store/src/path/harmonia.rs       |  65 ++
 .../src/{path.rs => path/mod.rs}              |   3 +
 4 files changed, 960 insertions(+), 10 deletions(-)
 create mode 100644 nix-bindings-store/src/path/harmonia.rs
 rename nix-bindings-store/src/{path.rs => path/mod.rs} (98%)

diff --git a/Cargo.lock b/Cargo.lock
index dcaf5b5..b96fa37 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -11,12 +11,33 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "android_system_properties"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.100"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a23eb6b1614318a8071c9b2521f36b424b2c83db5eb3a0fead4a6c0809af6e61"
 
+[[package]]
+name = "autocfg"
+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 = "bindgen"
 version = "0.69.5"
@@ -46,6 +67,31 @@ version = "2.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "812e12b5285cc515a9c72a5c1d3b6d46a19dac5acfef5265968c166106e31dd3"
 
+[[package]]
+name = "bumpalo"
+version = "3.19.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5dd9dc738b7a8311c7ade152424974d8115f2cdad61e8dab8dac9f2362298510"
+
+[[package]]
+name = "bytes"
+version = "1.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b35204fbdc0b3f4446b89fc1ac2cf84a8a68971995d0bf2e925ec7cd960f9cb3"
+dependencies = [
+ "serde",
+]
+
+[[package]]
+name = "cc"
+version = "1.2.54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6354c81bbfd62d9cfa9cb3c773c2b7b2a3a482d569de977fd0e961f6e7c00583"
+dependencies = [
+ "find-msvc-tools",
+ "shlex",
+]
+
 [[package]]
 name = "cexpr"
 version = "0.6.0"
@@ -61,6 +107,18 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
 
+[[package]]
+name = "chrono"
+version = "0.4.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fac4744fb15ae8337dc853fee7fb3f4e48c0fbaa23d0afe49c447b4fab126118"
+dependencies = [
+ "iana-time-zone",
+ "num-traits",
+ "serde",
+ "windows-link",
+]
+
 [[package]]
 name = "clang-sys"
 version = "1.8.1"
@@ -72,6 +130,21 @@ dependencies = [
  "libloading",
 ]
 
+[[package]]
+name = "convert_case"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "633458d4ef8c78b72454de2d54fd6ab2e60f9e02be22f3c6104cdc8a4e0fceb9"
+dependencies = [
+ "unicode-segmentation",
+]
+
+[[package]]
+name = "core-foundation-sys"
+version = "0.8.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
+
 [[package]]
 name = "cstr"
 version = "0.2.12"
@@ -92,12 +165,98 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "darling"
+version = "0.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9cdf337090841a411e2a7f3deb9187445851f91b309c0c0a29e05f74a00a48c0"
+dependencies = [
+ "darling_core",
+ "darling_macro",
+]
+
+[[package]]
+name = "darling_core"
+version = "0.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1247195ecd7e3c85f83c8d2a366e4210d588e802133e1e355180a9870b517ea4"
+dependencies = [
+ "fnv",
+ "ident_case",
+ "proc-macro2",
+ "quote",
+ "strsim",
+ "syn",
+]
+
+[[package]]
+name = "darling_macro"
+version = "0.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d38308df82d1080de0afee5d069fa14b0326a88c14f15c5ccda35b4a6c414c81"
+dependencies = [
+ "darling_core",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "data-encoding"
+version = "2.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7a1e2f27636f116493b8b860f5546edb47c8d8f8ea73e1d2a20be88e28d1fea"
+
+[[package]]
+name = "deranged"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ececcb659e7ba858fb4f10388c250a7252eb0a27373f1a72b8748afdd248e587"
+dependencies = [
+ "powerfmt",
+ "serde_core",
+]
+
+[[package]]
+name = "derive_more"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d751e9e49156b02b44f9c1815bcb94b984cdcc4396ecc32521c739452808b134"
+dependencies = [
+ "derive_more-impl",
+]
+
+[[package]]
+name = "derive_more-impl"
+version = "2.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "799a97264921d8623a957f6c3b9011f3b5492f557bbb7a5a19b7fa6d06ba8dcb"
+dependencies = [
+ "convert_case",
+ "proc-macro2",
+ "quote",
+ "rustc_version",
+ "syn",
+ "unicode-xid",
+]
+
+[[package]]
+name = "dyn-clone"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d0881ea181b1df73ff77ffaaf9c7544ecc11e82fba9b5f27b262a3c73a332555"
+
 [[package]]
 name = "either"
 version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
 
+[[package]]
+name = "equivalent"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
+
 [[package]]
 name = "errno"
 version = "0.3.14"
@@ -114,6 +273,29 @@ version = "2.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37909eebbb50d72f9059c3b6d82c0463f2ff062c9e95845c43a6c9c0355411be"
 
+[[package]]
+name = "find-msvc-tools"
+version = "0.1.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8591b0bcc8a98a64310a2fae1bb3e9b8564dd10e381e6e28010fde8e8e8568db"
+
+[[package]]
+name = "fnv"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
+
+[[package]]
+name = "getrandom"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.3.4"
@@ -132,6 +314,73 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280"
 
+[[package]]
+name = "harmonia-store-core"
+version = "0.0.0-alpha.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "983e1ba97729aded802a93f0fb5b61e2eae09efee77c9fa3d62c76e60b621bf0"
+dependencies = [
+ "bytes",
+ "data-encoding",
+ "derive_more",
+ "harmonia-utils-base-encoding",
+ "harmonia-utils-hash",
+ "num_enum",
+ "ring",
+ "serde",
+ "serde_json",
+ "serde_with",
+ "thiserror",
+ "tokio",
+ "tracing",
+ "zerocopy",
+]
+
+[[package]]
+name = "harmonia-utils-base-encoding"
+version = "0.0.0-alpha.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1e8a868920d6ab01dfa2c5abce20ecd2f6d7e1f3c6a9e1941426883ce15a52c"
+dependencies = [
+ "data-encoding",
+ "derive_more",
+ "serde",
+]
+
+[[package]]
+name = "harmonia-utils-hash"
+version = "0.0.0-alpha.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "301feeb6f34b380ab13df6bb264c461704dbbb7f81b45b46c406c0d8c2d8d7f4"
+dependencies = [
+ "data-encoding",
+ "derive_more",
+ "harmonia-utils-base-encoding",
+ "md5",
+ "ring",
+ "serde",
+ "thiserror",
+ "tokio",
+]
+
+[[package]]
+name = "hashbrown"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
+
+[[package]]
+name = "hashbrown"
+version = "0.16.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
+
+[[package]]
+name = "hex"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
+
 [[package]]
 name = "hex-literal"
 version = "0.4.1"
@@ -147,6 +396,59 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "iana-time-zone"
+version = "0.1.64"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "33e57f83510bb73707521ebaffa789ec8caf86f9657cad665b092b581d40e9fb"
+dependencies = [
+ "android_system_properties",
+ "core-foundation-sys",
+ "iana-time-zone-haiku",
+ "js-sys",
+ "log",
+ "wasm-bindgen",
+ "windows-core",
+]
+
+[[package]]
+name = "iana-time-zone-haiku"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f31827a206f56af32e590ba56d5d2d085f558508192593743f16b2306495269f"
+dependencies = [
+ "cc",
+]
+
+[[package]]
+name = "ident_case"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
+
+[[package]]
+name = "indexmap"
+version = "1.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bd070e393353796e801d209ad339e89596eb4c8d430d18ede6a1cced8fafbd99"
+dependencies = [
+ "autocfg",
+ "hashbrown 0.12.3",
+ "serde",
+]
+
+[[package]]
+name = "indexmap"
+version = "2.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7714e70437a7dc3ac8eb7e6f8df75fd8eb422675fc7678aff7364301092b1017"
+dependencies = [
+ "equivalent",
+ "hashbrown 0.16.1",
+ "serde",
+ "serde_core",
+]
+
 [[package]]
 name = "itertools"
 version = "0.12.1"
@@ -162,6 +464,16 @@ version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "92ecc6618181def0457392ccd0ee51198e065e016d1d527a7ac1b6dc7c1f09d2"
 
+[[package]]
+name = "js-sys"
+version = "0.3.85"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8c942ebf8e95485ca0d52d97da7c5a2c387d0e7f0ba4c35e93bfcaee045955b3"
+dependencies = [
+ "once_cell",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.5.0"
@@ -208,6 +520,12 @@ version = "0.4.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
 
+[[package]]
+name = "md5"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae960838283323069879657ca3de837e9f7bbb4c7bf6ea7f1b290d5e9476d2e0"
+
 [[package]]
 name = "memchr"
 version = "2.7.6"
@@ -220,6 +538,17 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"
 
+[[package]]
+name = "mio"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a69bcab0ad47271a0234d9422b131806bf3968021e5dc9328caf2d4cd58557fc"
+dependencies = [
+ "libc",
+ "wasi",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "nix-bindings-bdwgc-sys"
 version = "0.2.1"
@@ -313,6 +642,7 @@ version = "0.2.1"
 dependencies = [
  "anyhow",
  "ctor",
+ "harmonia-store-core",
  "hex-literal",
  "lazy_static",
  "nix-bindings-store-sys",
@@ -361,18 +691,67 @@ dependencies = [
  "minimal-lexical",
 ]
 
+[[package]]
+name = "num-conv"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cf97ec579c3c42f953ef76dbf8d55ac91fb219dde70e49aa4a6b7d74e9919050"
+
+[[package]]
+name = "num-traits"
+version = "0.2.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "num_enum"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1207a7e20ad57b847bbddc6776b968420d38292bbfe2089accff5e19e82454c"
+dependencies = [
+ "num_enum_derive",
+ "rustversion",
+]
+
+[[package]]
+name = "num_enum_derive"
+version = "0.7.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff32365de1b6743cb203b710788263c44a03de03802daf96092f2da4fe6ba4d7"
+dependencies = [
+ "proc-macro-crate",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.21.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
 
+[[package]]
+name = "pin-project-lite"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3b3cff922bd51709b605d9ead9aa71031d81447142d828eb4a6eba76fe619f9b"
+
 [[package]]
 name = "pkg-config"
 version = "0.3.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7edddbd0b52d732b21ad9a5fab5c704c14cd949e5e9a1ec5929a24fded1b904c"
 
+[[package]]
+name = "powerfmt"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
+
 [[package]]
 name = "prettyplease"
 version = "0.2.37"
@@ -383,6 +762,15 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "proc-macro-crate"
+version = "3.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "219cb19e96be00ab2e37d6e299658a0cfa83e52429179969b0f0121b4ac46983"
+dependencies = [
+ "toml_edit",
+]
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.106"
@@ -407,6 +795,26 @@ version = "5.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
 
+[[package]]
+name = "ref-cast"
+version = "1.0.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f354300ae66f76f1c85c5f84693f0ce81d747e2c3f21a45fef496d89c960bf7d"
+dependencies = [
+ "ref-cast-impl",
+]
+
+[[package]]
+name = "ref-cast-impl"
+version = "1.0.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7186006dcb21920990093f30e3dea63b7d6e977bf1256be20c3563a5db070da"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "regex"
 version = "1.12.2"
@@ -436,12 +844,35 @@ version = "0.8.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a2d987857b319362043e95f5353c0535c1f58eec5336fdfcf626430af7def58"
 
+[[package]]
+name = "ring"
+version = "0.17.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4689e6c2294d81e88dc6261c768b63bc4fcdb852be6d1352498b114f61383b7"
+dependencies = [
+ "cc",
+ "cfg-if",
+ "getrandom 0.2.17",
+ "libc",
+ "untrusted",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "rustc-hash"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "08d43f7aa6b08d49f382cde6a7982047c3426db949b1424bc4b7ec9ae12c6ce2"
 
+[[package]]
+name = "rustc_version"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
+dependencies = [
+ "semver",
+]
+
 [[package]]
 name = "rustix"
 version = "0.38.44"
@@ -468,6 +899,42 @@ dependencies = [
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "rustversion"
+version = "1.0.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d"
+
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+checksum = "4cd191f9397d57d581cddd31014772520aa448f65ef991055d7f61582c65165f"
+dependencies = [
+ "dyn-clone",
+ "ref-cast",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "54e910108742c57a770f492731f99be216a52fadd361b06c8fb59d74ccc267d2"
+dependencies = [
+ "dyn-clone",
+ "ref-cast",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
+
 [[package]]
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@@ -475,6 +942,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
 dependencies = [
  "serde_core",
+ "serde_derive",
 ]
 
 [[package]]
@@ -510,12 +978,69 @@ dependencies = [
  "zmij",
 ]
 
+[[package]]
+name = "serde_with"
+version = "3.16.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fa237f2807440d238e0364a218270b98f767a00d3dada77b1c53ae88940e2e7"
+dependencies = [
+ "base64",
+ "chrono",
+ "hex",
+ "indexmap 1.9.3",
+ "indexmap 2.13.0",
+ "schemars 0.9.0",
+ "schemars 1.2.0",
+ "serde_core",
+ "serde_json",
+ "serde_with_macros",
+ "time",
+]
+
+[[package]]
+name = "serde_with_macros"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52a8e3ca0ca629121f70ab50f95249e5a6f925cc0f6ffe8256c45b728875706c"
+dependencies = [
+ "darling",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
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 checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
 
+[[package]]
+name = "signal-hook-registry"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c4db69cba1110affc0e9f7bcd48bbf87b3f4fc7c61fc9155afd4c469eb3d6c1b"
+dependencies = [
+ "errno",
+ "libc",
+]
+
+[[package]]
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+checksum = "86f4aa3ad99f2088c990dfa82d367e19cb29268ed67c574d10d0a4bfe71f07e0"
+dependencies = [
+ "libc",
+ "windows-sys 0.60.2",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
 [[package]]
 name = "syn"
 version = "2.0.114"
@@ -534,18 +1059,181 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "655da9c7eb6305c55742045d5a8d2037996d61d8de95806335c7c86ce0f82e9c"
 dependencies = [
  "fastrand",
- "getrandom",
+ "getrandom 0.3.4",
  "once_cell",
  "rustix 1.1.3",
  "windows-sys 0.61.2",
 ]
 
+[[package]]
+name = "thiserror"
+version = "2.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4288b5bcbc7920c07a1149a35cf9590a2aa808e0bc1eafaade0b80947865fbc4"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebc4ee7f67670e9b64d05fa4253e753e016c6c95ff35b89b7941d6b856dec1d5"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9da98b7d9b7dad93488a84b8248efc35352b0b2657397d4167e7ad67e5d535e5"
+dependencies = [
+ "deranged",
+ "itoa",
+ "num-conv",
+ "powerfmt",
+ "serde_core",
+ "time-core",
+ "time-macros",
+]
+
+[[package]]
+name = "time-core"
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+checksum = "7694e1cfe791f8d31026952abf09c69ca6f6fa4e1a1229e18988f06a04a12dca"
+
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78cc610bac2dcee56805c99642447d4c5dbde4d01f752ffea0199aee1f601dc4"
+dependencies = [
+ "num-conv",
+ "time-core",
+]
+
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+checksum = "72a2903cd7736441aac9df9d7688bd0ce48edccaadf181c3b90be801e81d3d86"
+dependencies = [
+ "bytes",
+ "libc",
+ "mio",
+ "pin-project-lite",
+ "signal-hook-registry",
+ "socket2",
+ "tokio-macros",
+ "windows-sys 0.61.2",
+]
+
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+ "syn",
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+ "toml_datetime",
+ "toml_parser",
+ "winnow",
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+
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+dependencies = [
+ "winnow",
+]
+
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+checksum = "63e71662fa4b2a2c3a26f570f037eb95bb1f85397f3cd8076caed2f026a6d100"
+dependencies = [
+ "pin-project-lite",
+ "tracing-attributes",
+ "tracing-core",
+]
+
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+checksum = "7490cfa5ec963746568740651ac6781f701c9c5ea257c58e057f3ba8cf69e8da"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db97caf9d906fbde555dd62fa95ddba9eecfd14cb388e4f491a66d74cd5fb79a"
+dependencies = [
+ "once_cell",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9312f7c4f6ff9069b165498234ce8be658059c6728633667c526e27dc2cf1df5"
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.12.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f6ccf251212114b54433ec949fd6a7841275f9ada20dddd2f29e9ceea4501493"
+
+[[package]]
+name = "unicode-xid"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
+
+[[package]]
+name = "untrusted"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"
+
+[[package]]
+name = "wasi"
+version = "0.11.1+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+
 [[package]]
 name = "wasip2"
 version = "1.0.2+wasi-0.2.9"
@@ -555,6 +1243,51 @@ dependencies = [
  "wit-bindgen",
 ]
 
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.108"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "64024a30ec1e37399cf85a7ffefebdb72205ca1c972291c51512360d90bd8566"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "rustversion",
+ "wasm-bindgen-macro",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.108"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "008b239d9c740232e71bd39e8ef6429d27097518b6b30bdf9086833bd5b6d608"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.108"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5256bae2d58f54820e6490f9839c49780dff84c65aeab9e772f15d5f0e913a55"
+dependencies = [
+ "bumpalo",
+ "proc-macro2",
+ "quote",
+ "syn",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.108"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1f01b580c9ac74c8d8f0c0e4afb04eeef2acf145458e52c03845ee9cd23e3d12"
+dependencies = [
+ "unicode-ident",
+]
+
 [[package]]
 name = "which"
 version = "4.4.2"
@@ -567,19 +1300,90 @@ dependencies = [
  "rustix 0.38.44",
 ]
 
+[[package]]
+name = "windows-core"
+version = "0.62.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8e83a14d34d0623b51dce9581199302a221863196a1dde71a7663a4c2be9deb"
+dependencies = [
+ "windows-implement",
+ "windows-interface",
+ "windows-link",
+ "windows-result",
+ "windows-strings",
+]
+
+[[package]]
+name = "windows-implement"
+version = "0.60.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "windows-interface"
+version = "0.59.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "windows-link"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
 
+[[package]]
+name = "windows-result"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7781fa89eaf60850ac3d2da7af8e5242a5ea78d1a11c49bf2910bb5a73853eb5"
+dependencies = [
+ "windows-link",
+]
+
+[[package]]
+name = "windows-strings"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7837d08f69c77cf6b07689544538e017c1bfcf57e34b4c0ff58e6c2cd3b37091"
+dependencies = [
+ "windows-link",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.59.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e38bc4d79ed67fd075bcc251a1c39b32a1776bbe92e5bef1f0bf1f8c531853b"
 dependencies = [
- "windows-targets",
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.60.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2f500e4d28234f72040990ec9d39e3a6b950f9f22d3dba18416c35882612bcb"
+dependencies = [
+ "windows-targets 0.53.5",
 ]
 
 [[package]]
@@ -597,14 +1401,31 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b724f72796e036ab90c1021d4780d4d3d648aca59e491e6b98e725b84e99973"
 dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_gnullvm",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
+ "windows_aarch64_gnullvm 0.52.6",
+ "windows_aarch64_msvc 0.52.6",
+ "windows_i686_gnu 0.52.6",
+ "windows_i686_gnullvm 0.52.6",
+ "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",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.53.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4945f9f551b88e0d65f3db0bc25c33b8acea4d9e41163edf90dcd0b19f9069f3"
+dependencies = [
+ "windows-link",
+ "windows_aarch64_gnullvm 0.53.1",
+ "windows_aarch64_msvc 0.53.1",
+ "windows_i686_gnu 0.53.1",
+ "windows_i686_gnullvm 0.53.1",
+ "windows_i686_msvc 0.53.1",
+ "windows_x86_64_gnu 0.53.1",
+ "windows_x86_64_gnullvm 0.53.1",
+ "windows_x86_64_msvc 0.53.1",
 ]
 
 [[package]]
@@ -613,48 +1434,105 @@ version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "32a4622180e7a0ec044bb555404c800bc9fd9ec262ec147edd5989ccd0c02cd3"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a9d8416fa8b42f5c947f8482c43e7d89e73a173cead56d044f6a56104a6d1b53"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "09ec2a7bb152e2252b53fa7803150007879548bc709c039df7627cabbd05d469"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b9d782e804c2f632e395708e99a94275910eb9100b2114651e04744e9b125006"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e9b5ad5ab802e97eb8e295ac6720e509ee4c243f69d781394014ebfe8bbfa0b"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "960e6da069d81e09becb0ca57a65220ddff016ff2d6af6a223cf372a506593a3"
+
 [[package]]
 name = "windows_i686_gnullvm"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0eee52d38c090b3caa76c563b86c3a4bd71ef1a819287c19d586d7334ae8ed66"
 
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.53.1"
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+checksum = "fa7359d10048f68ab8b09fa71c3daccfb0e9b559aed648a8f95469c27057180c"
+
 [[package]]
 name = "windows_i686_msvc"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "240948bc05c5e7c6dabba28bf89d89ffce3e303022809e73deaefe4f6ec56c66"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.53.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e7ac75179f18232fe9c285163565a57ef8d3c89254a30685b57d83a38d326c2"
+
 [[package]]
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 checksum = "147a5c80aabfbf0c7d901cb5895d1de30ef2907eb21fbbab29ca94c5b08b1a78"
 
+[[package]]
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+checksum = "9c3842cdd74a865a8066ab39c8a7a473c0778a3f29370b5fd6b4b9aa7df4a499"
+
 [[package]]
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 checksum = "24d5b23dc417412679681396f2b49f3de8c1473deb516bd34410872eff51ed0d"
 
+[[package]]
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+checksum = "0ffa179e2d07eee8ad8f57493436566c7cc30ac536a3379fdf008f47f6bb7ae1"
+
 [[package]]
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+[[package]]
+name = "windows_x86_64_msvc"
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+checksum = "d6bbff5f0aada427a1e5a6da5f1f98158182f26556f345ac9e04d36d0ebed650"
+
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+checksum = "5a5364e9d77fcdeeaa6062ced926ee3381faa2ee02d3eb83a5c27a8825540829"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "wit-bindgen"
 version = "0.51.0"
diff --git a/nix-bindings-store/Cargo.toml b/nix-bindings-store/Cargo.toml
index 2e83ab4..af8b1bd 100644
--- a/nix-bindings-store/Cargo.toml
+++ b/nix-bindings-store/Cargo.toml
@@ -18,6 +18,7 @@ nix-bindings-util-sys = { path = "../nix-bindings-util-sys", version = "0.2.1" }
 nix-bindings-store-sys = { path = "../nix-bindings-store-sys", version = "0.2.1" }
 lazy_static = "1.4"
 zerocopy = "0.8"
+harmonia-store-core = { version = "0.0.0-alpha.0", optional = true }
 
 [dev-dependencies]
 ctor = "0.2"
@@ -30,6 +31,9 @@ pkg-config = "0.3"
 # Needed for version parsing in build.rs
 nix-bindings-util = { path = "../nix-bindings-util", version = "0.2.1" }
 
+[features]
+harmonia = [ "dep:harmonia-store-core" ]
+
 [lints.rust]
 warnings = "deny"
 dead-code = "allow"
diff --git a/nix-bindings-store/src/path/harmonia.rs b/nix-bindings-store/src/path/harmonia.rs
new file mode 100644
index 0000000..660fa1f
--- /dev/null
+++ b/nix-bindings-store/src/path/harmonia.rs
@@ -0,0 +1,65 @@
+use anyhow::{Context as _, Result};
+
+use super::{StorePath, STORE_PATH_HASH_SIZE};
+
+impl TryFrom<&harmonia_store_core::store_path::StorePath> for StorePath {
+    type Error = anyhow::Error;
+
+    fn try_from(harmonia_path: &harmonia_store_core::store_path::StorePath) -> Result<Self> {
+        let hash: &[u8; STORE_PATH_HASH_SIZE] = harmonia_path.hash().as_ref();
+        StorePath::from_parts(hash, harmonia_path.name().as_ref())
+    }
+}
+
+impl TryFrom<&StorePath> for harmonia_store_core::store_path::StorePath {
+    type Error = anyhow::Error;
+
+    fn try_from(nix_path: &StorePath) -> Result<Self> {
+        let hash = nix_path
+            .hash()
+            .context("Failed to get hash from nix StorePath")?;
+        let harmonia_hash = harmonia_store_core::store_path::StorePathHash::new(hash);
+
+        let name = nix_path
+            .name()
+            .context("Failed to get name from nix StorePath")?;
+
+        let harmonia_name: harmonia_store_core::store_path::StorePathName = name
+            .parse()
+            .context("Failed to parse name as StorePathName")?;
+
+        Ok(harmonia_store_core::store_path::StorePath::from((
+            harmonia_hash,
+            harmonia_name,
+        )))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+
+    #[test]
+    fn store_path_round_trip_harmonia() {
+        let harmonia_path: harmonia_store_core::store_path::StorePath =
+            "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo.drv".parse().unwrap();
+
+        let nix_path: crate::path::StorePath = (&harmonia_path).try_into().unwrap();
+
+        let harmonia_round_trip: harmonia_store_core::store_path::StorePath =
+            (&nix_path).try_into().unwrap();
+
+        assert_eq!(harmonia_path, harmonia_round_trip);
+    }
+
+    #[test]
+    fn store_path_harmonia_clone() {
+        let harmonia_path: harmonia_store_core::store_path::StorePath =
+            "g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-foo.drv".parse().unwrap();
+
+        let nix_path: crate::path::StorePath = (&harmonia_path).try_into().unwrap();
+        let cloned_path = nix_path.clone();
+
+        assert_eq!(nix_path.name().unwrap(), cloned_path.name().unwrap());
+        assert_eq!(nix_path.hash().unwrap(), cloned_path.hash().unwrap());
+    }
+}
diff --git a/nix-bindings-store/src/path.rs b/nix-bindings-store/src/path/mod.rs
similarity index 98%
rename from nix-bindings-store/src/path.rs
rename to nix-bindings-store/src/path/mod.rs
index 41f7f5b..c3478fa 100644
--- a/nix-bindings-store/src/path.rs
+++ b/nix-bindings-store/src/path/mod.rs
@@ -125,6 +125,9 @@ impl Drop for StorePath {
     }
 }
 
+#[cfg(all(feature = "harmonia", nix_at_least = "2.33"))]
+mod harmonia;
+
 #[cfg(test)]
 mod tests {
     use super::*;

From 714dcd95c07977acaf50e7188ee3b931dbc182ca Mon Sep 17 00:00:00 2001
From: Artemis Tosini <artemis.tosini@obsidian.systems>
Date: Thu, 15 Jan 2026 09:26:14 -0500
Subject: [PATCH 2/3] Add support for converting between libnix and harmonia
 derivations

---
 nix-bindings-store/Cargo.toml                 |   3 +-
 nix-bindings-store/src/derivation/harmonia.rs | 100 ++++++++++++++++++
 .../src/{derivation.rs => derivation/mod.rs}  |   6 ++
 3 files changed, 108 insertions(+), 1 deletion(-)
 create mode 100644 nix-bindings-store/src/derivation/harmonia.rs
 rename nix-bindings-store/src/{derivation.rs => derivation/mod.rs} (97%)

diff --git a/nix-bindings-store/Cargo.toml b/nix-bindings-store/Cargo.toml
index af8b1bd..232688b 100644
--- a/nix-bindings-store/Cargo.toml
+++ b/nix-bindings-store/Cargo.toml
@@ -19,6 +19,7 @@ nix-bindings-store-sys = { path = "../nix-bindings-store-sys", version = "0.2.1"
 lazy_static = "1.4"
 zerocopy = "0.8"
 harmonia-store-core = { version = "0.0.0-alpha.0", optional = true }
+serde_json = { version = "1.0", optional = true }
 
 [dev-dependencies]
 ctor = "0.2"
@@ -32,7 +33,7 @@ pkg-config = "0.3"
 nix-bindings-util = { path = "../nix-bindings-util", version = "0.2.1" }
 
 [features]
-harmonia = [ "dep:harmonia-store-core" ]
+harmonia = [ "dep:harmonia-store-core", "dep:serde_json" ]
 
 [lints.rust]
 warnings = "deny"
diff --git a/nix-bindings-store/src/derivation/harmonia.rs b/nix-bindings-store/src/derivation/harmonia.rs
new file mode 100644
index 0000000..44b34a2
--- /dev/null
+++ b/nix-bindings-store/src/derivation/harmonia.rs
@@ -0,0 +1,100 @@
+use anyhow::Context as _;
+
+use super::Derivation;
+
+impl Derivation {
+    /// Convert harmonia Derivation to nix-bindings Derivation.
+    ///
+    /// This requires a Store instance because the Nix C API needs it for internal validation.
+    pub fn from_harmonia(
+        store: &mut crate::store::Store,
+        harmonia_drv: &harmonia_store_core::derivation::Derivation,
+    ) -> anyhow::Result<Self> {
+        let json = serde_json::to_string(harmonia_drv)
+            .context("Failed to serialize harmonia Derivation to JSON")?;
+
+        store.derivation_from_json(&json)
+    }
+}
+
+impl TryFrom<&Derivation> for harmonia_store_core::derivation::Derivation {
+    type Error = anyhow::Error;
+
+    fn try_from(nix_drv: &Derivation) -> anyhow::Result<Self> {
+        let json = nix_drv
+            .to_json_string()
+            .context("Failed to convert nix Derivation to JSON")?;
+
+        serde_json::from_str(&json).context("Failed to parse JSON as harmonia Derivation")
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn create_harmonia_derivation() -> harmonia_store_core::derivation::Derivation {
+        use harmonia_store_core::derivation::{Derivation, DerivationOutput};
+        use harmonia_store_core::derived_path::OutputName;
+        use harmonia_store_core::store_path::StorePath;
+        use std::collections::{BTreeMap, BTreeSet};
+        use std::str::FromStr;
+
+        let system = format!("{}-{}", std::env::consts::ARCH, std::env::consts::OS);
+        let out_path = "8bs8sd27bzzy6w94fznjd2j8ldmdg7x6-myname";
+
+        let env = BTreeMap::from([
+            ("builder".into(), "/bin/sh".into()),
+            ("name".into(), "myname".into()),
+            ("out".into(), format!("/{out_path}").into()),
+            ("system".into(), system.clone().into()),
+        ]);
+        let mut outputs = BTreeMap::new();
+        outputs.insert(
+            OutputName::from_str("out").unwrap(),
+            DerivationOutput::InputAddressed(StorePath::from_base_path(out_path).unwrap()),
+        );
+
+        Derivation {
+            args: vec!["-c".into(), "echo $name foo > $out".into()],
+            builder: "/bin/sh".into(),
+            env,
+            inputs: BTreeSet::new(),
+            name: b"myname".as_slice().try_into().unwrap(),
+            outputs,
+            platform: system.into(),
+            structured_attrs: None,
+        }
+    }
+
+    #[test]
+    fn derivation_round_trip_harmonia() {
+        let mut store = crate::store::Store::open(Some("dummy://"), []).unwrap();
+        let harmonia_drv = create_harmonia_derivation();
+
+        // Convert to nix-bindings Derivation
+        let nix_drv = Derivation::from_harmonia(&mut store, &harmonia_drv).unwrap();
+
+        // Convert back to harmonia Derivation
+        let harmonia_round_trip: harmonia_store_core::derivation::Derivation =
+            (&nix_drv).try_into().unwrap();
+
+        assert_eq!(harmonia_drv, harmonia_round_trip);
+    }
+
+    #[test]
+    fn derivation_clone() {
+        let mut store = crate::store::Store::open(Some("dummy://"), []).unwrap();
+        let harmonia_drv = create_harmonia_derivation();
+
+        let derivation = Derivation::from_harmonia(&mut store, &harmonia_drv).unwrap();
+        let cloned_derivation = derivation.clone();
+
+        let original_harmonia: harmonia_store_core::derivation::Derivation =
+            (&derivation).try_into().unwrap();
+        let cloned_harmonia: harmonia_store_core::derivation::Derivation =
+            (&cloned_derivation).try_into().unwrap();
+
+        assert_eq!(original_harmonia, cloned_harmonia);
+    }
+}
diff --git a/nix-bindings-store/src/derivation.rs b/nix-bindings-store/src/derivation/mod.rs
similarity index 97%
rename from nix-bindings-store/src/derivation.rs
rename to nix-bindings-store/src/derivation/mod.rs
index ac4c265..557994e 100644
--- a/nix-bindings-store/src/derivation.rs
+++ b/nix-bindings-store/src/derivation/mod.rs
@@ -84,3 +84,9 @@ impl Drop for Derivation {
         }
     }
 }
+
+#[cfg(feature = "harmonia")]
+mod harmonia;
+
+#[cfg(test)]
+mod tests {}

From ad412bdd8c31c9e3dd15aa732dc4c470da5fc181 Mon Sep 17 00:00:00 2001
From: John Ericson <John.Ericson@Obsidian.Systems>
Date: Sat, 24 Jan 2026 21:01:38 -0500
Subject: [PATCH 3/3] CI with and without harmonia

---
 nci.nix | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/nci.nix b/nci.nix
index 62c523e..351ac77 100644
--- a/nci.nix
+++ b/nci.nix
@@ -49,5 +49,24 @@
           };
         };
       };
+      nci.crates.nix-bindings-store =
+        let
+          addHarmoniaProfile = ''
+            cat >> Cargo.toml <<'EOF'
+
+            [profile.harmonia]
+            inherits = "release"
+            EOF
+          '';
+        in
+        {
+          profiles.harmonia = {
+            features = [ "harmonia" ];
+            runTests = true;
+            # Add harmonia profile to Cargo.toml for both deps and main builds
+            depsDrvConfig.mkDerivation.postPatch = addHarmoniaProfile;
+            drvConfig.mkDerivation.postPatch = addHarmoniaProfile;
+          };
+        };
     };
 }