Fix Nix CI (#175)

* Trigger examples in Nix CI

* Ignore beta schema in CI

* Update taskfile

* Standardize to run command via task

.github/workflows/ci-nix.yml

@@ -8,13 +8,15 @@ on:
       - 'flake.*'
       - 'go.mod'
       - 'Taskfile.yml'
+      - 'examples/**'
   pull_request:
     paths:
       - '.github/workflows/ci-nix.yml'
       - '*.nix'
       - 'flake.*'
       - 'go.mod'
       - 'Taskfile.yml'
+      - 'examples/**'
   schedule:
     # Every 10:42 JST
     # https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#schedule
@@ -34,8 +36,3 @@ jobs:
       - run: nix develop --command task deps
       - run: nix develop --command task
       - run: nix run . -- --version
-      - run: |
-          nix develop --command bash -c '
-            git ls-files examples .github | \
-              xargs nix run . -- list --skip-by=this_command_does_not_exist_so_raise_errors_and_do_not_update_this_file
-          '

Taskfile.yml

@@ -8,6 +8,7 @@ tasks:
       - task: lint
       - task: test
       - task: build
+      - task: list
   install:
     cmds:
       - go install -ldflags "-X main.commit=$(git rev-parse HEAD)"
@@ -19,14 +20,14 @@ tasks:
       - go build -o ./dist/selfup ./cmd/selfup
   run:
     cmds:
-      - go run ./cmd/selfup run --prefix='# selfup ' --skip-by='nix run' .github/workflows/*.yml
+      - git ls-files -- examples ':!:*beta*' | xargs go run ./cmd/selfup run --skip-by=do_not_update_this_file
   list:
     cmds:
-      - go run ./cmd/selfup list --prefix='# selfup ' --skip-by='nix run' .github/workflows/*.yml
+      - git ls-files -- examples ':!:*beta*' | xargs go run ./cmd/selfup list --skip-by=do_not_update_this_file
   update:
     cmds:
       - nix flake update --commit-lock-file
-      - nix develop --command go run ./cmd/selfup run --prefix='# selfup ' --skip-by='nix run' .github/workflows/*.yml
+      - nix develop --command go run ./cmd/selfup run .github/workflows/*.yml
       - git diff-index --quiet HEAD || git commit -m 'Update CI dependencies with adjusting to nixpkgs' .github
   test:
     cmds: