but: init at 0.22.3

Assisted-by: opencode (GLM 5.3-flash)

but: add maintainer

pkgs/by-name/bu/but/package.nix

@@ -0,0 +1,88 @@
+{
+  lib,
+  nix-update-script,
+  openssl,
+  makeWrapper,
+  git,
+  dbus,
+  pkg-config,
+  fetchFromGitHub,
+  rustPlatform,
+}:
+rustPlatform.buildRustPackage (finalAttrs: {
+  __structuredAttrs = true;
+  pname = "but";
+  version = "0.22.3";
+  src = fetchFromGitHub {
+    owner = "gitbutlerapp";
+    repo = "gitbutler";
+    tag = "release/${finalAttrs.version}";
+    hash = "sha256-nW3yCbpbIhawLQVV+DptzGYiFBSKcyAP89NtDWHJM+0=";
+  };
+
+  cargoHash = "sha256-XRc2yok9K7f/vRAqgO78JUq/U36XSiUeOINupfOOSjw=";
+
+  nativeBuildInputs = [
+    pkg-config
+    makeWrapper
+  ];
+  buildInputs = [
+    openssl
+    dbus
+  ];
+
+  nativeCheckInputs = [ git ];
+
+  postFixup = ''
+    wrapProgram $out/bin/${finalAttrs.pname} \
+      --prefix PATH : ${lib.makeBinPath [ git ]}
+  '';
+
+  env = {
+    OPENSSL_NO_VENDOR = true; # tell openssl-sys: use system OpenSSL, never vendor
+    VERSION = finalAttrs.version;
+  };
+
+  postPatch = ''
+    # gix-testtools execve's fixture scripts directly; their `#!/usr/bin/env bash`
+    # shebang can't resolve in the nix sandbox (no /usr/bin), so point them at
+    # the actual bash from the build environment.
+    patchShebangs crates/but/tests/fixtures/scenario/*.sh
+  '';
+
+  cargoBuildFlags = [
+    "-p"
+    "but"
+  ];
+  buildFeatures = [ "packaged-but-distribution" ];
+
+  cargoTestFlags = [
+    "-p"
+    "but"
+  ];
+  checkFlags = lib.concatMap (t: [ "--skip=${t}" ]) [
+    # TUI SVG snapshots resolve the system file-opener (xdg-open → desktop
+    # associations; e.g. Thunar on Xfce) instead of upstream's fixture opener.
+    "command::legacy::status::tui::tests::open_tests::"
+    # These tests rely on builtin programs that only exist in debug builds
+    # (#[cfg(debug_assertions)] in but-api/src/open/program.rs), while nixpkgs
+    # runs the test suite with --profile release (matching what ships).
+    "command::open::"
+  ];
+  passthru.updateScript = nix-update-script {
+    extraArgs = [
+      "--version-regex"
+      "release/(.*)"
+    ];
+  };
+
+  meta = {
+    description = "GitButler CLI for virtual branches and stacked diffs";
+    homepage = "https://gitbutler.com";
+    changelog = "https://github.com/gitbutlerapp/gitbutler/releases/tag/release/${finalAttrs.version}";
+    license = lib.licenses.fsl11Mit;
+    mainProgram = "but";
+    platforms = lib.platforms.linux;
+    maintainers = with lib.maintainers; [ parry-97 ];
+  };
+})