File buildpath-abi-stability.patch of Package ghc
Index: ghc-8.10.0.20191210/compiler/iface/MkIface.hs
===================================================================
--- ghc-8.10.0.20191210.orig/compiler/iface/MkIface.hs
+++ ghc-8.10.0.20191210/compiler/iface/MkIface.hs
@@ -679,7 +679,7 @@ addFingerprints hsc_env iface0
iface_hash <- computeFingerprint putNameLiterally
(mod_hash,
ann_fn (mkVarOcc "module"), -- See mkIfaceAnnCache
- mi_usages iface0,
+ usages,
sorted_deps,
mi_hpc iface0)
@@ -714,6 +714,9 @@ addFingerprints hsc_env iface0
(non_orph_rules, orph_rules) = mkOrphMap ifRuleOrph (mi_rules iface0)
(non_orph_fis, orph_fis) = mkOrphMap ifFamInstOrph (mi_fam_insts iface0)
ann_fn = mkIfaceAnnCache (mi_anns iface0)
+ -- Do not allow filenames to affect the interface
+ usages = [ case u of UsageFile _ fp -> UsageFile "" fp; _ -> u | u <- mi_usages iface0 ]
+
-- | Retrieve the orphan hashes 'mi_orphan_hash' for a list of modules
-- (in particular, the orphan modules which are transitively imported by the