Renamer hangs when checking type family consistency
checkFamInstConsistency goes into and endless loop in some situations when called from tcRnImports. I have attached a tarball containing a boiled-down example consisting of three .hs files and a shell script. The hang only happens when compiling the three files (in dependency order) manually with -c; the hang does not happen with --make. So it looks like importing a module is not loading something that checkFamInstConsistency is assuming is there.