Make all package dirs absolute

Author: lgoettgens

lib/package.gi

@@ -304,7 +304,7 @@ InstallGlobalFunction( InitializePackagesInfoRecords, function( arg )
     # the first time this is called, add the cmd line args to the list
     if IsEmpty(GAPInfo.PackageDirectories) then
         for pkgdirstrs in GAPInfo.CommandLineOptions.packagedirs do
-            pkgdirs:= List( SplitString( pkgdirstrs, ";" ), Directory );
+            pkgdirs:= List( List( SplitString( pkgdirstrs, ";" ), GAP_realpath ), Directory );
             for pkgdir in pkgdirs do
                 if not pkgdir in GAPInfo.PackageDirectories then
                     Add( GAPInfo.PackageDirectories, pkgdir );
@@ -1897,8 +1897,10 @@ InstallGlobalFunction( ExtendPackageDirectories, function( paths_or_dirs )
     changed:= false;
     for p in paths_or_dirs do
       if IsString( p ) then
-        p:= Directory( p );
-      elif not IsDirectory( p ) then
+        p:= Directory( GAP_realpath ( p ) );
+      elif IsDirectory( p ) then
+        p:= Directory( GAP_realpath ( p![1] ) );
+      else
         Error("input must be a list of path strings or directory objects");
       fi;
       if not p in GAPInfo.PackageDirectories then