ci: Switch to GitHub Actions

After GitHub Actions were available, this repository kept using Travis
because it worked well enough, especially given this package is very
much in maintenance mode.  However, going forward it'd be nice to use
purcell/setup-emacs action to test various Emacs versions.

Don't bother testing against Emacs 24 because the next release will
bump the minimum Emacs version to at least 25.1.

While touching this setup, drop the Makefile target for downloading
dependencies and instead just expect dependencies to be one level up
from the snakemake-mode checkout.

3 files changed, 46 insertions, 48 deletions

diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..6772f36
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,43 @@
+name: test
+on: push
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        emacs_version:
+        - 25.3
+        - 27.2
+        - snapshot
+    steps:
+    - name: Install emacs
+      uses: purcell/setup-emacs@master
+      with:
+        version: ${{ matrix.emacs_version }}
+    - name: Check out dash
+      uses: actions/checkout@v2
+      with:
+        repository: magnars/dash.el
+        path: dash.el
+    - name: Check out magit-popup
+      uses: actions/checkout@v2
+      with:
+        repository: magit/magit-popup
+        path: magit-popup
+    - name: Check out snakemake-mode
+      uses: actions/checkout@v2
+      with:
+        repository: kyleam/snakemake-mode
+        path: snakemake-mode
+    - name: Set up Python 3.7
+      uses: actions/setup-python@v1
+      with:
+        python-version: 3.7
+    - name: Install Snakemake
+      run: |
+        python -m pip install --upgrade pip
+        pip install snakemake
+    - name: Build snakemake-mode
+      run: make -C snakemake-mode all
+    - name: Test snaekmake-mode
+      run: make -C snakemake-mode test
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 9eb10a1..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,33 +0,0 @@
-language: python
-
-python:
-  - "3.7"
-
-env:
-  matrix:
-    # - EMACS=emacs24  # This is 24.3, while magit-popup.el requires 24.4.
-    - EMACS=emacs-snapshot
-
-install:
-  - if [ "$EMACS" = "emacs24" ]; then
-        sudo add-apt-repository -y ppa:cassou/emacs &&
-        sudo apt-get update -qq &&
-        sudo apt-get install -qq emacs24 emacs24-el;
-    fi
-  - if [ "$EMACS" = "emacs-snapshot" ]; then
-        sudo add-apt-repository -y ppa:ubuntu-elisp/ppa &&
-        sudo apt-get update -qq &&
-        sudo apt-get install -qq emacs-snapshot;
-    fi
-  - pip install snakemake
-
-before_script:
-  make .deps
-
-script:
-  make test EMACS=${EMACS}
-
-notifications:
-  email:
-    on_success: never
-    on_failure: always
diff --git a/Makefile b/Makefile
index bcd2893..d93192a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 
-LOAD_PATH = -L .deps -L .
+LOAD_PATH = -L ../magit-popup -L ../dash.el -L .
 EMACS = emacs
 BATCH = $(EMACS) -Q --batch $(LOAD_PATH)
 CURL := curl --silent
@@ -8,14 +8,11 @@ els := snakemake.el snakemake-mode.el
 elcs := $(patsubst %.el, %.elc, $(els))
 AUTOLOADS_FILE = snakemake-autoloads.el
 
-DASH_URL := https://raw.githubusercontent.com/magnars/dash.el/master/dash.el
-POPUP_URL := https://raw.githubusercontent.com/magit/magit-popup/master/magit-popup.el
-
 .PHONY: all
 all: $(elcs) $(AUTOLOADS_FILE)
 
 .PHONY: test
-test: | .deps
+test:
 	@$(BATCH) -l snakemake-test \
 	--eval "(ert-run-tests-batch-and-exit '(not (tag interactive)))"
 
@@ -25,18 +22,9 @@ $(AUTOLOADS_FILE): $(els)
 	       (generated-autoload-file \"$(CURDIR)/$@\")) \
 	  (update-directory-autoloads \"$(CURDIR)/\"))"
 
-.deps:
-	mkdir -p .deps
-	$(CURL) $(DASH_URL) > .deps/dash.el
-	$(CURL) $(POPUP_URL) > .deps/magit-popup.el
-
-%.elc: %.el | .deps
+%.elc: %.el
 	@$(BATCH) -f batch-byte-compile $<
 
 .PHONY: clean
 clean:
 	$(RM) $(elcs) $(AUTOLOADS_FILE)
-
-.PHONY: clean-all
-clean-all: clean
-	$(RM) -r .deps