CI: actually test with the various meson args

Different variable names and no-one noticed.

This means we need to add a few dependencies that weren't needed before.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

.github/workflows/main.yml

@@ -3,9 +3,12 @@ name: linux
 on: [ push, pull_request ]
 
 env:
-  UBUNTU_DEP_BUILD: gcc g++ pkg-config systemd libevdev-dev libglib2.0-dev libjson-glib-dev libsystemd-dev libudev-dev libunistring-dev python3-dev python3-evdev swig
+  UBUNTU_DEP_BUILD: |
+    gcc g++ pkg-config systemd libevdev-dev libglib2.0-dev
+    libjson-glib-dev libsystemd-dev libudev-dev libunistring-dev
+    python3-dev python3-evdev swig python3-sphinx
   UBUNTU_DEP_TEST: check python3-gi python3-lxml valgrind
-  PIP_PACKAGES: meson ninja libevdev pyudev pytest
+  PIP_PACKAGES: meson ninja libevdev pyudev pytest sphinx_rtd_theme
 
 jobs:
   build-and-dist:
@@ -23,10 +26,10 @@ jobs:
         with:
           apt: $UBUNTU_DEP_BUILD $UBUNTU_DEP_TEST
           pip: $PIP_PACKAGES
-      - name: meson test ${{matrix.meson_options}}
+      - name: meson test ${{matrix.meson_args}}
         uses: ./.github/actions/meson
         with:
-          meson_args: --prefix=$PWD/_instdir ${{matrix.meson_options}}
+          meson_args: --prefix=$PWD/_instdir ${{matrix.meson_args}}
           ninja_args: install
       - name: check installation of data files
         run:  diff -u <(cd data/devices; ls *.device) <(cd _instdir/share/libratbag; ls *.device)