Beef up the tests

.gitlab/script/ghcup_version.sh

@@ -0,0 +1,33 @@
+#!/bin/sh
+
+set -eux
+
+. "$( cd "$(dirname "$0")" ; pwd -P )/../ghcup_env"
+
+mkdir -p "$CI_PROJECT_DIR"/.local/bin
+
+cp ./ghcup "$CI_PROJECT_DIR"/.local/bin/ghcup
+
+ghcup --version
+
+ghcup -v install ${GHC_VERSION}
+ghcup -v set ${GHC_VERSION}
+ghcup -v install-cabal
+
+cabal --version
+
+ghcup -v debug-info
+
+ghcup -v list
+ghcup -v list -t ghc
+ghcup -v list -t cabal-install
+
+ghc --version
+ghci --version
+ghc-$(ghc --numeric-version) --version
+ghci-$(ghc --numeric-version) --version
+
+ghcup -v upgrade
+
+ghcup -v rm -f ${GHC_VERSION}
+