ci: run more stuff in parallel

we have to flock cabal so it doesn't step on itself, but that does mean we
can run e.g. the venv setup and cabal build in parallel.

Signed-off-by: Tycho Andersen <[email protected]>

Author: tych0

.github/workflows/ci.yaml

@@ -27,4 +27,4 @@ jobs:
                   cabal-version: latest
             - run: sudo apt install x11-apps
             - run: git clone https://gitlab.freedesktop.org/xorg/proto/xcbproto.git proto && cd proto && git checkout ${{ matrix.xcbver }}
-            - run: make XCBDIR=./proto/src check
+            - run: make -j XCBDIR=./proto/src check

Makefile

@@ -8,7 +8,7 @@ else
 endif
 NCPUS=$(shell grep -c processor /proc/cpuinfo)
 PARALLEL=$(shell which parallel)
-CABAL=cabal --config-file=./cabal.config
+CABAL=flock xcffib.cabal cabal --config-file=./cabal.config
 GEN=$(CABAL) new-run --minimize-conflict-set -j$(NCPUS) exe:xcffibgen --
 VENV=xcffib_venv
 PYTHON=$(VENV)/bin/python3