Check if file is present instead of directory

Fixes #8886.

Problem: any `sync-all` command that is run before the first succesfull
`sync-all get` would trigger a false warning about an old `time` package
being present.

Cause: after cloning the ghc repository, the (empty) `libraries/time`
directory is already present.

Solution: check if the directory actually contains any of the `time`
files. I picked the `LICENSE` file, since `boot` does so as well.

Signed-off-by: Austin Seipp <austin@well-typed.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/sync-all b/sync-all
index 355e16a562..651a4f0bbb 100755
--- a/sync-all
+++ b/sync-all
@@ -964,7 +964,7 @@ EOF
         }
     }
     message "== Checking for old time from tarball";
-    if (-d "libraries/time" and ! -e "libraries/time/.git") {
+    if (-f "libraries/time/LICENSE" and ! -e "libraries/time/.git") {
             print <<EOF;
 ============================
 ATTENTION!