Replace manual lint CI with melpazoid

Add melpazoid GitHub Actions workflow for byte-compile, checkdoc,
package-lint and license checks. Remove the duplicate manual lint job
from ci.yml. Simplify Makefile to delegate linting to melpazoid
(auto-cloned to $XDG_CACHE_HOME/melpazoid).

Author: dakra

.github/workflows/ci.yml

@@ -6,50 +6,6 @@ on:
   pull_request:
 
 jobs:
-  lint:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        emacs_version:
-          - '27.2'
-          - '29.4'
-          - 'snapshot'
-    steps:
-      - uses: actions/checkout@v4
-      - uses: purcell/setup-emacs@master
-        with:
-          version: ${{ matrix.emacs_version }}
-
-      - name: Byte-compile
-        run: |
-          emacs --batch -Q -L . \
-            -f batch-byte-compile \
-            ghostel.el ghostel-debug.el
-
-      - name: Checkdoc
-        run: |
-          output=$(emacs --batch -Q -L . \
-            --eval "(require 'checkdoc)" \
-            --eval "(checkdoc-file \"ghostel.el\")" 2>&1)
-          echo "$output"
-          if echo "$output" | grep -q "Warning"; then
-            exit 1
-          fi
-
-      - name: Package-lint
-        run: |
-          emacs --batch -Q \
-            --eval "(progn
-                      (require 'package)
-                      (push '(\"melpa\" . \"https://melpa.org/packages/\") package-archives)
-                      (package-initialize)
-                      (package-refresh-contents)
-                      (package-install 'package-lint))" \
-            -L . \
-            -f package-lint-batch-and-exit \
-            ghostel.el
-
   test:
     runs-on: ubuntu-latest
     strategy:

.github/workflows/melpazoid.yml

@@ -0,0 +1,24 @@
+# melpazoid <https://github.com/riscy/melpazoid> build checks.
+
+name: melpazoid
+
+on: [push, pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with: { python-version: '3.10' }
+      - name: Install
+        run: |
+          sudo apt-get install emacs && emacs --version
+          git clone https://github.com/riscy/melpazoid.git ~/melpazoid
+      - name: Run
+        env:
+          LOCAL_REPO: ${{ github.workspace }}
+          RECIPE: (ghostel :fetcher github :repo "dakra/ghostel")
+          EXIST_OK: false
+        run: make -C ~/melpazoid

Makefile

@@ -1,8 +1,11 @@
 EMACS ?= emacs
 
-.PHONY: all build check test lint byte-compile checkdoc package-lint clean
+XDG_CACHE_HOME ?= $(HOME)/.cache
+MELPAZOID_DIR  ?= $(XDG_CACHE_HOME)/melpazoid
 
-all: build byte-compile test lint
+.PHONY: all build check test lint melpazoid byte-compile clean
+
+all: build test lint
 
 build:
 	./build.sh
@@ -13,30 +16,19 @@ check:
 test:
 	$(EMACS) --batch -Q -L . -l test/ghostel-test.el -f ghostel-test-run-elisp
 
-lint: byte-compile checkdoc package-lint
+lint: melpazoid
+
+melpazoid:
+	@if [ ! -d "$(MELPAZOID_DIR)" ]; then \
+		git clone https://github.com/riscy/melpazoid.git "$(MELPAZOID_DIR)"; \
+	fi
+	RECIPE='(ghostel :fetcher github :repo "dakra/ghostel")' \
+		LOCAL_REPO=$(CURDIR) \
+		make -C "$(MELPAZOID_DIR)"
 
 byte-compile:
 	$(EMACS) --batch -Q -L . -f batch-byte-compile ghostel.el ghostel-debug.el
 
-checkdoc:
-	@output=$$($(EMACS) --batch -Q -L . \
-	  --eval "(require 'checkdoc)" \
-	  --eval "(checkdoc-file \"ghostel.el\")" 2>&1); \
-	echo "$$output"; \
-	if echo "$$output" | grep -q "Warning"; then exit 1; fi
-
-package-lint:
-	$(EMACS) --batch -Q \
-	  --eval "(progn \
-	            (require 'package) \
-	            (push '(\"melpa\" . \"https://melpa.org/packages/\") package-archives) \
-	            (package-initialize) \
-	            (package-refresh-contents) \
-	            (package-install 'package-lint))" \
-	  -L . \
-	  -f package-lint-batch-and-exit \
-	  ghostel.el
-
 clean:
 	rm -f ghostel-module.dylib ghostel-module.so
 	rm -f ghostel.elc ghostel-debug.elc