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Merged
croaky merged 4 commits into from
Feb 4, 2026
Merged

watch: add file watching with automatic process restart #4

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04f1368
watch: add file watching with automatic process restart
croaky Feb 4, 2026
eee7852
watch: fix race condition and shutdown hang
croaky Feb 4, 2026
8251ce0
Merge branch 'main' into croaky/reload
croaky Feb 4, 2026
cfb4bdd
1.1.24
croaky Feb 4, 2026
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22 changes: 20 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -60,11 +60,29 @@ running processes, wait 5s, and then send a `SIGKILL` to all remaining processes
It runs the processes in `Procfile.dev` "as-is";
It does not load environment variables from `.env` before running.

## File watching

Add `# watch: PATTERNS` to automatically restart a process when files change:

```txt
web: bundle exec ruby cmd/web.rb # watch: lib/**/*.rb,ui/**/*.haml
esbuild: bun run buildwatch
```

Patterns are relative to the directory containing `Procfile.dev`.
Glob patterns support `*` (single directory) and `**` (recursive).
Processes without a watch annotation run without file watching.
Changes are debounced (500ms) to avoid rapid restarts.
On change, procman sends SIGINT, waits for the process to exit, then restarts it.

`procman` is distributed via Go source code,
not via a Homebrew package.

`procman` depends on [github.com/creack/pty](https://github.com/creack/pty/tree/master)
for a PTY interface.
`procman` depends on:

- [creack/pty](https://github.com/creack/pty) for PTY interface
- [fsnotify/fsnotify](https://github.com/fsnotify/fsnotify) for file watching
- [bmatcuk/doublestar](https://github.com/bmatcuk/doublestar) for glob patterns

## Developing

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8 changes: 7 additions & 1 deletion go.mod
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Expand Up @@ -2,4 +2,10 @@ module github.com/croaky/procman

go 1.25

require github.com/creack/pty v1.1.24
require (
github.com/bmatcuk/doublestar/v4 v4.10.0
github.com/creack/pty v1.1.24
github.com/fsnotify/fsnotify v1.9.0
)

require golang.org/x/sys v0.13.0 // indirect
6 changes: 6 additions & 0 deletions go.sum
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@@ -1,2 +1,8 @@
github.com/bmatcuk/doublestar/v4 v4.10.0 h1:zU9WiOla1YA122oLM6i4EXvGW62DvKZVxIe6TYWexEs=
github.com/bmatcuk/doublestar/v4 v4.10.0/go.mod h1:xBQ8jztBU6kakFMg+8WGxn0c6z1fTSPVIjEY1Wr7jzc=
github.com/creack/pty v1.1.24 h1:bJrF4RRfyJnbTJqzRLHzcGaZK1NeM5kTC9jGgovnR1s=
github.com/creack/pty v1.1.24/go.mod h1:08sCNb52WyoAwi2QDyzUCTgcvVFhUzewun7wtTfvcwE=
github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
github.com/fsnotify/fsnotify v1.9.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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