flake: get rid of hash checking

the build will fail if the hashes are not up to date, so there's no reason to check them.

.github/allowed-nix-update-users.nix

@@ -1,5 +1,4 @@
-github:
-let
+github: let
   commenter = github.event.sender;
   allowlist = {
     # See id on https://api.github.com/users/<username>
@@ -13,8 +12,8 @@ let
     (builtins.attrValues allowlist) ++ [github.event.issue.user.id]
   );
 in
-  if isAllowedUser then
+  if isAllowedUser
+  then
     builtins.trace "The user '${commenter.login}' is allowed to run the command. ✅"
     true
-  else
-    builtins.throw "The user '${commenter.login}' is not allowed to run the command. ❌"
+  else builtins.throw "The user '${commenter.login}' is not allowed to run the command. ❌"

.github/workflows/nix-ci.yml

@@ -3,84 +3,9 @@ on:
   push:
   pull_request:
 jobs:
-  check-hashes:
-    name: Ensure Nix Hashes are up-to-date
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - name: Check if relevant files changed
-        shell: bash
-        id: check
-        run: |
-          # most sane regex
-          # checks if one of these files/directories has been touched
-          # - package.json
-          # - package-lock.json
-          # - nix/
-          # - composer.json
-          # - composer.lock
-          if [ -n "$(git diff --name-only ${{ github.event.before }} ${{ github.sha }} | grep -P '^(?:package(?:-lock)?\.json$|nix\/|composer\.(?:json|lock)$)')" ]; then
-            echo "File(s) changed so this job runs"
-          else
-            echo "no files changed so we exit neutrally"
-            echo "skip=true" >> "$GITHUB_OUTPUT"
-          fi
-      - name: Install nix
-        if: "steps.check.outputs.skip != 'true'"
-        uses: cachix/install-nix-action@v22
-        with:
-          nix_path: nixpkgs=channel:nixos-unstable
-      # - uses: cachix/cachix-action@v12
-      #   with:
-      #     name: trawelling
-      #     authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-
-      - name: Update generated files
-        if: "steps.check.outputs.skip != 'true'"
-        run: nix develop --impure .#ci --command "update-nix-package-deps"
-
-      - name: Check if up-to-date
-        shell: bash
-        id: check
-        if: "steps.check.outputs.skip != 'true'"
-        run: |
-          if [[ ! -z $(git status -s) ]]; then
-            git status
-            echo "up-to-date=false" >> "$GITHUB_OUTPUT"
-          fi
-
-      - name: Find Comment
-        uses: peter-evans/find-comment@v2
-        if: "steps.check.outputs.skip != 'true' && github.event_name == 'pull_request' && steps.check.outputs.up-to-date == 'false'"
-        id: fc
-        with:
-          issue-number: ${{ github.event.pull_request.number }}
-          comment-author: 'github-actions[bot]'
-          body-includes: The composer or npm dependencies are out of sync with the generated nix files.
-
-      - name: Create comment
-        if: "steps.check.outputs.skip != 'true' && steps.fc.outputs.comment-id == '' && github.event_name == 'pull_request' && steps.check.outputs.up-to-date == 'false'"
-        uses: peter-evans/create-or-update-comment@v3
-        with:
-          issue-number: ${{ github.event.pull_request.number }}
-          body: |
-            The composer or npm dependencies are out of sync with the generated nix files.
-
-            Please update the files by either running the `update-nix-package-dep` script locally
-            or let GitHub actions do it by running `/nix-update`.
-
-            *This comment was written by a bot!* 🤖
-
-      - name: Fail Build
-        if: "steps.check.outputs.skip != 'true' && steps.check.outputs.up-to-date == 'false'"
-        shell: bash
-        run: exit 1
-
   build:
     name: Build Package
     runs-on: ubuntu-latest
-    needs:
-      - check-hashes
     steps:
       - uses: actions/checkout@v3
       - name: Install nix