install-bindist: Test for manpage installation

See ghc#22371 (closed).

.gitlab/install-bindist.sh

@@ -118,11 +118,26 @@ if [ -n "$TEST_LLVM" ]; then
   [[ $(./main +RTS -s) -eq 2 ]]
 fi
 
+# Check for existence of manpage.
+case "$(uname)" in
+  Linux)
+    if [ -z "$BINDIST_ONLY" ]; then
+        if ! ( man 1 ghc >/dev/null ); then
+            man 1 ghc
+            echo "Failed to find ghc(1) manpage"
+            exit 1
+        fi
+    fi
+    ;;
+  *)
+    echo "skipping manpage test" ;;
+esac
+
 HADDOCK_HTML_INDEX="$(ghc-pkg field base haddock-html --simple)/index.html"
 # Checking that haddock-htmls is populated correctly
-if [ -f $HADDOCK_HTML_INDEX ]
+if [ -f "$HADDOCK_HTML_INDEX" ]
 then
-  ls -alh $HADDOCK_HTML_INDEX
+  ls -alh "$HADDOCK_HTML_INDEX"
 else
   echo "Haddock html field incorrect path" && exit 1
 fi