Files
beads/flake.nix
Darin e0734e230f fix: NixOS symlink compatibility for mtime and permission checks (#459)
* fix: use os.Lstat for symlink-safe mtime and permission checks

On NixOS and other systems using symlinks heavily (e.g., home-manager),
os.Stat follows symlinks and returns the target's metadata. This causes:

1. False staleness detection when JSONL is symlinked - mtime of target
   changes unpredictably when symlinks are recreated
2. os.Chmod failing or changing wrong file's permissions when target
   is in read-only location (e.g., /nix/store)
3. os.Chtimes modifying target's times instead of the symlink itself

Changes:
- autoimport.go: Use Lstat for JSONL mtime in CheckStaleness()
- import.go: Use Lstat in TouchDatabaseFile() for JSONL mtime
- export.go: Skip chmod for symlinked files
- multirepo.go: Use Lstat for JSONL mtime cache
- multirepo_export.go: Use Lstat for mtime, skip chmod for symlinks
- doctor/fix/permissions.go: Skip permission fixes for symlinked paths

These changes are safe cross-platform:
- On systems without symlinks, Lstat behaves identically to Stat
- Symlink permission bits are ignored on Unix anyway
- The extra Lstat syscall overhead is negligible

Fixes symlink-related data loss on NixOS. See GitHub issue #379.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

* test: add symlink behavior tests for NixOS compatibility

Add tests that verify symlink handling behavior:
- TestCheckStaleness_SymlinkedJSONL: verifies mtime detection uses
  symlink's own mtime (os.Lstat), not target's mtime (os.Stat)
- TestPermissions_SkipsSymlinkedBeadsDir: verifies chmod is skipped
  for symlinked .beads directories
- TestPermissions_SkipsSymlinkedDatabase: verifies chmod is skipped
  for symlinked database files while still fixing .beads dir perms

Also adds devShell to flake.nix for local development with go, gopls,
golangci-lint, and sqlite tools.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Claude <noreply@anthropic.com>
2025-12-05 13:22:09 -08:00

53 lines
1.1 KiB
Nix

{
description = "beads (bd) - An issue tracker designed for AI-supervised coding workflows";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
flake-utils.url = "github:numtide/flake-utils";
};
outputs =
{
self,
nixpkgs,
flake-utils,
}:
flake-utils.lib.eachSystem
[
"x86_64-linux"
"aarch64-linux"
"x86_64-darwin"
"aarch64-darwin"
]
(
system:
let
pkgs = nixpkgs.legacyPackages.${system};
in
{
packages.default = pkgs.callPackage ./default.nix { inherit pkgs self; };
apps.default = {
type = "app";
program = "${self.packages.${system}.default}/bin/bd";
};
devShells.default = pkgs.mkShell {
buildInputs = with pkgs; [
go
git
gopls
gotools
golangci-lint
sqlite
];
shellHook = ''
echo "beads development shell"
echo "Go version: $(go version)"
'';
};
}
);
}