From dfd9e72b1786597db643d50c7a55d1fcbadf7802 Mon Sep 17 00:00:00 2001
From: nsfisis <nsfisis@gmail.com>
Date: Sun, 30 Aug 2026 16:24:31 +0900
Subject: build(nix): add a package output producing the binary

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
---
 flake.nix | 102 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 100 insertions(+), 2 deletions(-)

(limited to 'flake.nix')

diff --git a/flake.nix b/flake.nix
index 5b51672e..5cd80bee 100644
--- a/flake.nix
+++ b/flake.nix
@@ -6,6 +6,11 @@
 
     systems.url = "github:nix-systems/default";
 
+    composer = {
+      url = "github:composer/composer/2.9.7";
+      flake = false;
+    };
+
     flake-utils = {
       url = "github:numtide/flake-utils";
       inputs.systems.follows = "systems";
@@ -24,7 +29,9 @@
 
   outputs =
     {
+      self,
       nixpkgs,
+      composer,
       flake-utils,
       rust-overlay,
       treefmt-nix,
@@ -42,15 +49,106 @@
           imports = [ ./treefmt.nix ];
           programs.rustfmt.package = rustToolchain;
         };
+
+        php = pkgs.php85;
+
+        composerVersion =
+          let
+            versionLines = builtins.filter (match: match != null) (
+              map (line: builtins.match " *public const VERSION = '(.*)';" line) (
+                pkgs.lib.splitString "\n" (builtins.readFile "${composer}/src/Composer/Composer.php")
+              )
+            );
+          in
+          builtins.head (builtins.head versionLines);
+
+        composerRuntime = pkgs.stdenvNoCC.mkDerivation {
+          pname = "composer-runtime";
+          version = composerVersion;
+          src = composer;
+          nativeBuildInputs = [
+            php
+            php.packages.composer
+          ];
+          dontPatchShebangs = true;
+          buildPhase = ''
+            runHook preBuild
+            export COMPOSER_HOME="$TMPDIR/composer-home"
+            export COMPOSER_CACHE_DIR="$TMPDIR/composer-cache"
+            export COMPOSER_ROOT_VERSION="${composerVersion}"
+            composer install --no-dev --no-interaction --no-progress
+            runHook postBuild
+          '';
+          installPhase = ''
+            runHook preInstall
+            cp -r . "$out"
+            runHook postInstall
+          '';
+
+          outputHashMode = "recursive";
+          outputHashAlgo = "sha256";
+          outputHash = "sha256-owdTo9YBaQv3a3FnUubBfI0gjca5XEJ84/PukcukPfc=";
+        };
+
+        commitTime = self.lastModified;
+        commitDate = self.lastModifiedDate;
+
+        rustPlatform = pkgs.makeRustPlatform {
+          cargo = rustToolchain;
+          rustc = rustToolchain;
+        };
+
+        shirabe = rustPlatform.buildRustPackage {
+          pname = "shirabe";
+          version = (builtins.fromTOML (builtins.readFile ./Cargo.toml)).workspace.package.version;
+
+          src = pkgs.lib.fileset.toSource {
+            root = ./.;
+            fileset = pkgs.lib.fileset.unions [
+              ./Cargo.toml
+              ./Cargo.lock
+              ./crates
+            ];
+          };
+          cargoLock.lockFile = ./Cargo.lock;
+
+          postPatch = ''
+            cp -r ${composerRuntime} composer
+            chmod -R u+w composer
+          '';
+
+          env = {
+            SHIRABE_RELEASE_DATE =
+              let
+                field = start: builtins.substring start 2 commitDate;
+              in
+              "${builtins.substring 0 4 commitDate}-${field 4}-${field 6} ${field 8}:${field 10}:${field 12}";
+            SHIRABE_DEV_WARNING_TIME = toString (commitTime + 60 * 86400);
+          };
+
+          doCheck = false;
+
+          meta = {
+            description = "Rust port of Composer, the dependency manager for PHP";
+            homepage = "https://github.com/nsfisis/php-shirabe";
+            license = pkgs.lib.licenses.mit;
+            mainProgram = "shirabe";
+          };
+        };
       in
       {
         formatter = treefmt.config.build.wrapper;
 
+        packages = {
+          inherit shirabe;
+          default = shirabe;
+        };
+
         devShells.default = pkgs.mkShell {
           packages = [
             rustToolchain
-            pkgs.php85
-            pkgs.php85Packages.composer
+            php
+            php.packages.composer
             pkgs.just
 
             # The following softwares are used for testing:
-- 
cgit v1.3.1-4-g156e