From 505cc019aef7c217c700b61536adcb22d0f7b4d1 Mon Sep 17 00:00:00 2001
From: Philippe Laflamme <philippe.laflamme@gmail.com>
Date: Fri, 11 Jul 2025 14:52:52 -0400
Subject: [PATCH 1/2] feat: implement `ruff` as flake checks
MIME-Version: 1.0
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Had to add `--impure` to the call due to the following error otherwise:

```
error:
       … while checking flake output 'packages'
         at /nix/store/5cjz7jyqyfr5vq8b6bjs24vdnvdhy9rb-source/flake.nix:118:7:
          117|
          118|       packages = forEachSystem (system:
             |       ^
          119|         let

       … while checking the derivation 'packages.x86_64-linux.bootstrap-aarch64'
         at /nix/store/dg3hg3ksr5sl3adskxiwj7357z47ggvr-source/lib/attrsets.nix:977:47:
          976|   */
          977|   nameValuePair = name: value: { inherit name value; };
             |                                               ^
          978|

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: 'builtins.storePath' is not allowed in pure evaluation mode

```
---
 .github/workflows/lints.yml | 22 +++-------------------
 checks/ruff-fmt.nix         | 10 ++++++++++
 checks/ruff-lint.nix        | 10 ++++++++++
 flake.nix                   | 13 ++++++++++---
 4 files changed, 33 insertions(+), 22 deletions(-)
 create mode 100644 checks/ruff-fmt.nix
 create mode 100644 checks/ruff-lint.nix

diff --git a/.github/workflows/lints.yml b/.github/workflows/lints.yml
index db8db96..dc114e0 100644
--- a/.github/workflows/lints.yml
+++ b/.github/workflows/lints.yml
@@ -5,7 +5,7 @@ on:
   schedule:
     - cron: 0 0 * * 1
 jobs:
-  lint-nix:
+  check:
     runs-on: ubuntu-latest
 
     steps:
@@ -15,21 +15,5 @@ jobs:
       - name: Install nix
         uses: cachix/install-nix-action@v25
 
-      - name: Run nix-formatter-pack-check
-        run: nix build .#checks.x86_64-linux.nix-formatter-pack-check
-
-  lint-py:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - name: Install nix
-        uses: cachix/install-nix-action@v25
-
-      - name: Run ruff linter
-        run: nix run 'nixpkgs#ruff' -- check
-
-      - name: Run ruff formatter
-        run: nix run 'nixpkgs#ruff' -- format --diff
+      - name: Run flake checks
+        run: nix flake check --impure -L
diff --git a/checks/ruff-fmt.nix b/checks/ruff-fmt.nix
new file mode 100644
index 0000000..941abc3
--- /dev/null
+++ b/checks/ruff-fmt.nix
@@ -0,0 +1,10 @@
+{ pkgs, checkRoot }:
+pkgs.runCommandLocal "ruff-fmt"
+{
+  src = ./.;
+  nativeBuildInputs = with pkgs; [ ruff ];
+}
+  ''
+    cd ${checkRoot};
+    ruff format --no-cache --diff && mkdir $out
+  ''
diff --git a/checks/ruff-lint.nix b/checks/ruff-lint.nix
new file mode 100644
index 0000000..c1d9560
--- /dev/null
+++ b/checks/ruff-lint.nix
@@ -0,0 +1,10 @@
+{ pkgs, checkRoot }:
+pkgs.runCommandLocal "ruff-lint"
+{
+  src = ./.;
+  nativeBuildInputs = with pkgs; [ ruff ];
+}
+  ''
+    cd ${checkRoot};
+    ruff check --no-cache && mkdir $out
+  ''
diff --git a/flake.nix b/flake.nix
index ad92e98..576d711 100644
--- a/flake.nix
+++ b/flake.nix
@@ -63,9 +63,16 @@
         };
       });
 
-      checks = forEachSystem (system: {
-        nix-formatter-pack-check = nix-formatter-pack.lib.mkCheck formatterPackArgsFor.${system};
-      });
+      checks = forEachSystem (system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+        in
+        {
+          nix-formatter-pack-check = nix-formatter-pack.lib.mkCheck formatterPackArgsFor.${system};
+          ruff-lint = import ./checks/ruff-lint.nix { inherit pkgs; checkRoot = ./.; };
+          ruff-fmt = import ./checks/ruff-fmt.nix { inherit pkgs; checkRoot = ./.; };
+        }
+      );
 
       formatter = forEachSystem (system: nix-formatter-pack.lib.mkFormatter formatterPackArgsFor.${system});
 

From 819abe1fabaa29be8795c81b2f6706fe18234fb9 Mon Sep 17 00:00:00 2001
From: Philippe Laflamme <philippe.laflamme@gmail.com>
Date: Fri, 11 Jul 2025 15:09:32 -0400
Subject: [PATCH 2/2] feat: nix flake update to get more recent `ruff`

---
 flake.lock | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/flake.lock b/flake.lock
index 888acae..361cb01 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1709445365,
-        "narHash": "sha256-DVv6nd9FQBbMWbOmhq0KVqmlc3y3FMSYl49UXmMcO+0=",
+        "lastModified": 1752256062,
+        "narHash": "sha256-2s0PrY3vIFusm4UrqPnskY6SgdVolEDAz9wHcCSadcw=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "4de84265d7ec7634a69ba75028696d74de9a44a7",
+        "rev": "b8b7e5ec3570eb003d55f4947dd39af15c3ca98d",
         "type": "github"
       },
       "original": {
@@ -31,11 +31,11 @@
         "nmt": "nmt"
       },
       "locked": {
-        "lastModified": 1705252799,
-        "narHash": "sha256-HgSTREh7VoXjGgNDwKQUYcYo13rPkltW7IitHrTPA5c=",
+        "lastModified": 1742249870,
+        "narHash": "sha256-U37ECk3zpfp92D3H0gzfWPyb5sf0RdOdublCq1zjq+w=",
         "owner": "Gerschtli",
         "repo": "nix-formatter-pack",
-        "rev": "2de39dedd79aab14c01b9e2934842051a160ffa5",
+        "rev": "fe5b4498e3161191bd93fe0683dff347f6f689df",
         "type": "github"
       },
       "original": {
@@ -46,11 +46,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1708172716,
-        "narHash": "sha256-3M94oln0b61m3dUmLyECCA9hYAHXZEszM4saE3CmQO4=",
+        "lastModified": 1752259019,
+        "narHash": "sha256-XHjyWQjmXCaoU36cTPO6QRemYNTgIRyyKiy0pDwk7c4=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5d874ac46894c896119bce68e758e9e80bdb28f1",
+        "rev": "1cf71b641e2358e0f92536b5df0a72a8c05edb05",
         "type": "github"
       },
       "original": {