chore: add treefmt formatting (nix fmt + pre-commit + CI check)#5
Merged
Conversation
Wire treefmt via treefmt-nix: nixfmt, dhall format, purs-tidy (.tidyrc.json) and LuaFormatter for the FFI (.lua-format, kept over StyLua because it preserves the parentheses pslua's parser needs). `nix fmt` formats; the dev shell installs a content-based pre-commit hook and CI runs `nix fmt && git diff --exit-code` (content-based, since the in-place formatters bump mtime and would trip treefmt --fail-on-change). Lua lines budget 130 cols, matching the raised `luacheck --max-line-length`. The bulk of the diff is the first format pass.
There was a problem hiding this comment.
Pull request overview
Rolls out ecosystem formatting via treefmt-nix so this repo can be consistently formatted with nix fmt, checked in CI, and enforced via a dev-shell-installed pre-commit hook—aligning the fork with the formatting setup used elsewhere in the purescript-lua ecosystem.
Changes:
- Add
treefmt.nixplus formatter configs (.tidyrc.json,.lua-format) and wire treefmt-nix intoflake.nix(formatter+checks.formatting). - Add CI format checking (
nix fmt && git diff --exit-code) and update luacheck to--max-line-length 130. - Apply initial formatting pass to touched PureScript/Lua/Dhall files and update contributor docs.
Reviewed changes
Copilot reviewed 8 out of 11 changed files in this pull request and generated 3 comments.
Show a summary per file
| File | Description |
|---|---|
treefmt.nix |
Introduces treefmt-nix configuration for nixfmt, dhall, purs-tidy, and lua-format. |
flake.nix |
Wires treefmt-nix into flake outputs; adds devShell pre-commit hook installation logic. |
flake.lock |
Pins treefmt-nix input. |
.github/workflows/ci.yml |
Adds formatting check step; updates luacheck invocation/line length. |
AGENTS.md |
Documents formatting workflow and updated lint command. |
.tidyrc.json |
Adds purs-tidy configuration used by treefmt. |
.lua-format |
Adds LuaFormatter configuration used by treefmt. |
.gitignore |
Ensures .tidyrc.json / .lua-format are not ignored. |
src/Effect/Ref.purs |
Formatting-only change (purs-tidy layout). |
src/Effect/Ref.lua |
Formatting-only change (LuaFormatter layout). |
spago.dhall |
Formatting-only change (dhall format / whitespace cleanup). |
💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Roll the ecosystem formatting setup (ADR 0007, piloted in purescript-lua/purescript-lua-effect#6) onto this fork.
Tooling. Copies
treefmt.nix/.tidyrc.json/.lua-formatand wires treefmt-nix into the flake:nix fmtformats,checks.formattingis exposed, the dev shell installs a content-based pre-commit hook, and CI gains a format-check step. The check is content-based (nix fmt && git diff --exit-code) rather thantreefmt --ci, since the in-place formatters bump mtime even when content is unchanged. LuaFormatter is kept over StyLua because it preserves the parentheses pslua's foreign-file parser requires;luacheck --max-line-lengthraised to 130 to match.Diff. The bulk is the first
nix fmtpass over*.pursand the*.luaFFI. Verified locally: build +luacheck --max-line-length 130green.