Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC

Commits:

• 333df444
  by sheaf at 2026-06-10T05:10:25-04:00

  Check for cabal-install >= 3.12 upfront
  
  Starting with commit 8cb99552f607f6bc4000e45ab32532d50c8bb996, Hadrian
  requires cabal-install >= 3.12 in order to use the 'cabal path' command
  that was introduced in version 3.12, as per
    https://github.com/haskell/cabal/blob/a51c4ee1556d816ad86e90db7e6330dd51b0b6e7/release-notes/cabal-install-3.12.1.0.md?plain=1#L45
  
  This was not reflected in the Hadrian build script, causing a delayed
  build failure instead of enforcing the version requirement upfront,
  which this patch does.
  
  Fixes #27317
  

2 changed files:

• + changelog.d/T27317
• hadrian/build-cabal

Changes:

+section: packaging

+synopsis: Enforce cabal-install >= 3.12 requirement upfront when building Hadrian

+issues: #27317

+mrs: !16132

+description:

+  We now enforce the cabal-install >= 3.12 requirement upfront when building

+  Hadrian, instead of silently accepting older versions and later failing.

 CABVERSTR=$("$CABAL" --numeric-version)

 CABVER=( ${CABVERSTR//./ } )

-if [ "${CABVER[0]}" -lt 3 ]; then

-    echo "Cabal version is too old; you need at least cabal-install 3.0"

+# We use 'cabal path', introduced with cabal-install 3.12.

+# Check version ahead of time to avoid a surprising failure later (#27317).

+if [ "${CABVER[0]}" -lt 3 ] || { [ "${CABVER[0]}" -eq 3 ] && [ "${CABVER[1]}" -lt 12 ]; }; then

+    echo "Cabal version is too old; you need at least cabal-install 3.12"

     exit 2

 fi