## Summary
- `CopyCollector.WriteFile` now removes any existing destination file
before writing, handling read-only modes (e.g. git pack files at
`0444`) that cause `EACCES`/`ERROR_ACCESS_DENIED` on macOS and Windows.
- Added `O_TRUNC` to the `OpenFile` flags as a safety net.
## Root cause
When a composite action with a post step runs on a host runner,
`runPostStep` calls `maybeCopyToActionDir`, which re-copies the action
into `miscpath/act/actions/<name>/`. The first copy (main step) writes
`.git/objects/pack/*.idx` at the destination with mode `0444` (as set
by go-git). The second copy (post step) calls
`os.OpenFile(dest, O_CREATE|O_WRONLY, …)` on that existing `0444` file,
which fails immediately:
- macOS: `open <path>: permission denied`
- Windows: `open <path>: Access is denied`
Fixes: https://gitea.com/gitea/runner/issues/941
Fixes: https://gitea.com/gitea/runner/issues/876
---------
Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: silverwind <2021+silverwind@noreply.gitea.com>
Reviewed-on: https://gitea.com/gitea/runner/pulls/942
Reviewed-by: silverwind <2021+silverwind@noreply.gitea.com>
Co-authored-by: Nicolas <bircni@icloud.com>
Co-committed-by: Nicolas <bircni@icloud.com>
Merges the `gitea.com/gitea/act` fork into this repository as the `act/`
directory and consumes it as a local package. The `replace github.com/nektos/act
=> gitea.com/gitea/act` directive is removed; act's dependencies are merged
into the root `go.mod`.
- Imports rewritten: `github.com/nektos/act/pkg/...` → `gitea.com/gitea/act_runner/act/...`
(flattened — `pkg/` boundary dropped to match the layout forgejo-runner adopted).
- Dropped act's CLI (`cmd/`, `main.go`) and all upstream project files; kept
the library tree + `LICENSE`.
- Added `// Copyright <year> The Gitea Authors ...` / `// Copyright <year> nektos`
headers to 104 `.go` files.
- Pre-existing act lint violations annotated inline with
`//nolint:<linter> // pre-existing issue from nektos/act`.
`.golangci.yml` is unchanged vs `main`.
- Makefile test target: `-race -short` (matches forgejo-runner).
- Pre-existing integration test failures fixed: race in parallel executor
(atomic counters); TestSetupEnv / command_test / expression_test /
run_context_test updated to match gitea fork runtime; TestJobExecutor and
TestActionCache gated on `testing.Short()`.
Full `gitea/act` commit history is reachable via the second parent.
Co-Authored-By: Claude (Opus 4.7) <noreply@anthropic.com>
