From 056fc0260b4d5a66fdcc945d7ca56013cf2aee1d Mon Sep 17 00:00:00 2001
From: Samuel Burnham <45365069+samuelburnham@users.noreply.github.com>
Date: Wed, 19 Feb 2025 16:41:23 -0500
Subject: [PATCH] ci: Cache Lean packages in Cachix

---
 .github/workflows/ci.yml | 26 ++++++++++++++++++++++++++
 .gitignore               |  1 -
 flake.nix                |  2 +-
 3 files changed, 27 insertions(+), 2 deletions(-)
 create mode 100644 .github/workflows/ci.yml

diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..dfe47ff
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,26 @@
+# Build and upload Lean binaries to Cachix cache
+name: Nix CI
+
+on:
+  push:
+    branches: main
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: Build and cache Lean
+    runs-on: warp-ubuntu-latest-x64-16x
+    steps:
+      - uses: actions/checkout@v4
+      - uses: DeterminateSystems/nix-installer-action@main
+      - uses: cachix/cachix-action@v14
+        with:
+          name: argumentcomputer
+          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+      - run: |
+          nix build .#cacheRoots
+
diff --git a/.gitignore b/.gitignore
index 5bdcc34..898762e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,2 @@
-.*
 !.gitignore
 /result
diff --git a/flake.nix b/flake.nix
index b99af67..607fda7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -38,7 +38,7 @@
         };
 
         packages = {
-          inherit (pkgs.lean) leanshared lean leanc lean-all lake;
+          inherit (pkgs.lean) leanshared lean leanc lean-all lake cacheRoots;
         };
 
         checks = import ./checks.nix {inherit pkgs;};