ci(editor): each fixture is configured before it is read, as a project is before it is opened

Author: Sunrisepeak

.github/scripts/check-toolchain-lanes.sh

@@ -120,6 +120,14 @@ editor_lane() {
         [ -f "$dir/build.mcpp" ] || continue
         echo "── $fixture"
         out="${RUNNER_TEMP:-/tmp}/editor-$fixture.json"
+        # CONFIGURED FIRST, as a project is before anyone opens it: the
+        # configuration provisions what the build program's context names --
+        # the toolchain a fixture pins, the Qt SDK, a shader compiler -- and
+        # without it the build database describes no build program, so the
+        # editor finds not even `mcpp` (measured on a fresh runner).
+        (cd "$dir" && "$MCPP_EDITOR" build --configure-only) > "${out%.json}.configure.log" 2>&1 ||
+            { cat "${out%.json}.configure.log"
+              echo "| $fixture | — | — | \`mcpp build --configure-only\` failed |" >> "$summary"; failed=1; continue; }
         # mcppls exits 1 when it reports an error and still writes the report,
         # so the report decides; only a run that wrote none is its own failure.
         local status=0

.github/workflows/ci.yml

@@ -1803,7 +1803,10 @@ jobs:
     runs-on: ubuntu-24.04
     env:
       MCPP_HOME: /home/runner/.mcpp
-    timeout-minutes: 60
+    # Each fixture is configured before it is read, which provisions what its
+    # build program names (the device toolchains, the Qt SDK); a cold cache
+    # downloads all of them.
+    timeout-minutes: 120
     steps:
       - uses: actions/checkout@v4
 
@@ -1824,9 +1827,6 @@ jobs:
           export MCPP_VENDORED_XLINGS="$PWD/mcpp-${MCPP_EDITOR_VERSION}-linux-x86_64/registry/bin/xlings"
           "$MCPP_EDITOR" --version
           "$MCPP_EDITOR" self config --mirror GLOBAL
-          # The default toolchain, installed before the first fixture rather
-          # than inside mcppls's first build-database run and its deadline.
-          (cd tests/island-interface && "$MCPP_EDITOR" build --configure-only)
           echo "MCPP_EDITOR=$MCPP_EDITOR" >> "$GITHUB_ENV"
           echo "MCPP_VENDORED_XLINGS=$MCPP_VENDORED_XLINGS" >> "$GITHUB_ENV"