Merge pull request #480 from numtide/new-README

README: new format

.github/workflows/coverage.yml

@@ -0,0 +1,26 @@
+name: Code Coverage
+
+on: [push]
+
+jobs:
+    coverage:
+        runs-on: "ubuntu-20.04"
+        name: Coverage
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                  fetch-depth: 0
+            - name: Install Nix
+              uses: cachix/install-nix-action@v30
+              with:
+                  extra_nix_config: |
+                      accept-flake-config = true
+                      experimental-features = nix-command flakes
+            - name: Run coverage
+              run: nix build .#treefmt.tests.coverage
+            - name: Upload coverage
+              uses: coverallsapp/github-action@v2
+              with:
+                  github-token: ${{ secrets.github_token }}
+                  file: result
+                  format: golang

README.md

@@ -1,15 +1,21 @@
-<h1 align="center">
-  <br>
-  <img src="docs/content/assets/images/logo.svg" alt="logo" width="200">
-  <br>
-  treefmt — one CLI to format your repo
-  <br>
-  <br>
-</h1>
+<div align="center">
 
-[![Support room on Matrix](https://img.shields.io/matrix/treefmt:numtide.com.svg?label=%23treefmt%3Anumtide.com&logo=matrix&server_fqdn=matrix.numtide.com)](https://matrix.to/#/#treefmt:numtide.com)
+# treefmt
 
-**Status: beta**
+<img src="docs/content/assets/images/logo.svg" height="150"/>
+
+**One CLI to format your repo**
+
+_A <a href="https://numtide.com/">numtide</a> project._
+
+<p>
+<a href='https://coveralls.io/github/numtide/treefmt?branch=new-README'><img src='https://coveralls.io/repos/github/numtide/treefmt/badge.svg?branch=new-README' alt='Coverage Status' /></a>
+<a href="https://github.com/numtide/treefmt/actions/workflows/release.yml"><img src="https://github.com/numtide/treefmt/actions/workflows/release.yml/badge.svg"/></a>
+<img alt="Static Badge" src="https://img.shields.io/badge/status-beta-yellow">
+<a href="https://app.element.io/#/room/#home:numtide.com"><img src="https://img.shields.io/badge/Support-%23numtide-blue"/></a>
+</p>
+
+</div>
 
 `treefmt` streamlines the process of applying formatters to your project, making it a breeze with just one command line.
 
@@ -147,27 +153,6 @@ This project is still pretty new. Down the line we also want to add support for:
 All contributions are welcome! We try to keep the project simple and focused. Please refer to the [Contributing](./docs/content/contributing/code.md)
 guidelines for more information.
 
-## Moving from Rust To Go
-
-You may be familiar with [Version 1], which is written in [Rust]. So, why re-write it in [Go]?
-
-Ultimately, `treefmt` is spending most of it's time shelling out calls to the underlying formatters. This process is
-just as fast/performant in Go as it is in Rust.
-
-The remaining tasks are processing some cli args and parsing a config file. Do we really need something as _heavy duty_
-as Rust for that?
-
-Despite all this, you can make good, sane arguments for continuing with [Version 1] in Rust instead of a re-write.
-So here's a _bad argument_.
-
-[Brian] wanted to improve performance by moving away from a [Toml] cache file, introduce pipelines for applying multiple
-formatters against the same file set, and add an extensible approach for how `treefmt` walks file systems. He knows Go
-much better than Rust.
-
-[zimbatm] thought it was a good idea too.
-
-So here we are :shrug:.
-
 ## Commercial support
 
 Looking for help or customization?

nix/packages/treefmt/default.nix

@@ -63,8 +63,22 @@ in
       git config --global user.name "Treefmt Test"
     '';
 
-    passthru.tests = {
-      golangci-lint = perSystem.self.treefmt.overrideAttrs (old: {
+    passthru.tests = let
+      inherit (perSystem.self) treefmt;
+    in {
+      coverage = lib.optionalAttrs pkgs.stdenv.isx86_64 (treefmt.overrideAttrs (old: {
+        nativeBuildInputs = old.nativeBuildInputs ++ [pkgs.gcc];
+        CGO_ENABLED = 1;
+        buildPhase = ''
+          HOME=$TMPDIR
+          go test -race -covermode=atomic -coverprofile=coverage.out -v ./...
+        '';
+        installPhase = ''
+          mv coverage.out $out
+        '';
+      }));
+
+      golangci-lint = treefmt.overrideAttrs (old: {
         nativeBuildInputs = old.nativeBuildInputs ++ [pkgs.golangci-lint];
         buildPhase = ''
           HOME=$TMPDIR