ci: Support building and installing deqp-runner from source

Add support for building and installing deqp-runner from a git source
repository to facilitate further development & testing of new features
or simply making use of the latest upstream changes which were not
already tagged as a new package version.

The git revision to be built must be specified by setting
'DEQP_RUNNER_GIT_REV' env variable. To specify a git tag name instead,
'DEQP_RUNNER_GIT_TAG' variable must be used. It is also possible to
indicate a custom git repository via 'DEQP_RUNNER_GIT_URL'.

If neither a git revision or tag name has been set, deqp-runner is
installed from the rust package registry (the default behavior).

v2: Make use of '--git' and '--rev' cargo args to automate the git
checkout operation (Rohan).

v3: Allow Git URL override by using the hardcoded URL only when
DEQP_RUNNER_GIT_URL is not already set.

v4: Override 'EXTRA_CARGO_ARGS' to optimize the script and avoid a
second call to 'cargo install'. Additionally, add support for
indicating git tags (Rohan).

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Rohan Garg <rohan.garg@intel.com>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14413>

.gitlab-ci/container/build-deqp-runner.sh

@@ -1,9 +1,22 @@
-#!/bin/bash
+#!/bin/sh
 
 set -ex
 
-cargo install --locked deqp-runner \
-  -j ${FDO_CI_CONCURRENT:-4} \
-  --version 0.11.0 \
-  --root /usr/local \
-  $EXTRA_CARGO_ARGS
+if [ -n "${DEQP_RUNNER_GIT_TAG}${DEQP_RUNNER_GIT_REV}" ]; then
+    # Build and install from source
+    EXTRA_CARGO_ARGS="--git ${DEQP_RUNNER_GIT_URL:-https://gitlab.freedesktop.org/anholt/deqp-runner.git} ${EXTRA_CARGO_ARGS}"
+
+    if [ -n "${DEQP_RUNNER_GIT_TAG}" ]; then
+        EXTRA_CARGO_ARGS="--tag ${DEQP_RUNNER_GIT_TAG} ${EXTRA_CARGO_ARGS}"
+    else
+        EXTRA_CARGO_ARGS="--rev ${DEQP_RUNNER_GIT_REV} ${EXTRA_CARGO_ARGS}"
+    fi
+else
+    # Install from package registry
+    EXTRA_CARGO_ARGS="--version 0.11.0 ${EXTRA_CARGO_ARGS} -- deqp-runner"
+fi
+
+cargo install --locked  \
+    -j ${FDO_CI_CONCURRENT:-4} \
+    --root /usr/local \
+    ${EXTRA_CARGO_ARGS}