fix(ci): align the Idris2 version assert with the pinned image (0.8.0)

With the assert made diagnosable, the actual mismatch is visible:

    idris2 --version -> Idris 2, version 0.8.0-6ca00e72e
    ::error::expected Idris 2 0.7.0

The digest-pinned idris2-pack image ships 0.8.0, so the 0.7.0 assertion could
never have matched and this job has never passed on its own terms.

Nothing in the repository actually requires 0.7.0: abi.ipkg declares no version
constraint (it depends only on `base`), and the `idris2 0.7.0` line in
.tool-versions is commented out, so it pins nothing. The only 0.7.0 references
were the workflow asserts and their comments — stale documentation that drifted
from the digest.

The immutable digest is the authority, so the version notes are brought into
step with it rather than the other way round. The typecheck now actually runs.

Also fixes the identical brittle assert in release.yml, which piped
`idris2 --version` into `grep -Fx` under pipefail exactly as ci.yml did.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: hyperpolymath

.github/workflows/ci.yml

@@ -20,7 +20,8 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     container:
-      # Idris 2 0.7.0, pinned by immutable image digest.
+      # Idris 2 0.8.0, pinned by immutable image digest.
+      # The digest is the authority; keep the version note in step with it.
       image: ghcr.io/stefan-hoeck/idris2-pack@sha256:de9781906050dc44704ec6de0108c86f899ef17b2642932b79e00245d613b8ad
     steps:
       - name: Checkout
@@ -54,8 +55,8 @@ jobs:
           ver="$(idris2 --version)"
           echo "idris2 --version -> ${ver}"
           case "$ver" in
-            *"0.7.0"*) ;;
-            *) echo "::error::expected Idris 2 0.7.0, got: ${ver}"; exit 1 ;;
+            *"0.8.0"*) ;;
+            *) echo "::error::expected Idris 2 0.8.0, got: ${ver}"; exit 1 ;;
           esac
           idris2 --typecheck abi.ipkg
 

.github/workflows/release.yml

@@ -34,7 +34,13 @@ jobs:
         shell: bash
         run: |
           set -euo pipefail
-          idris2 --version | grep -Fx 'Idris 2, version 0.7.0'
+          # Same fix as ci.yml: never assert through a pipe under pipefail.
+          ver="$(idris2 --version)"
+          echo "idris2 --version -> ${ver}"
+          case "$ver" in
+            *"0.8.0"*) ;;
+            *) echo "::error::expected Idris 2 0.8.0, got: ${ver}"; exit 1 ;;
+          esac
           idris2 --typecheck abi.ipkg
           (
             cd src/interface/ffi

.tool-versions

@@ -6,5 +6,5 @@
 # elixir 1.18.0
 # erlang 27.2
 # zig 0.14.0
-# idris2 0.7.0
+# idris2 0.8.0
 rust nightly