Fix ProjectPlanning so not all SpecificSourcePackages are local

Author: typedrat

cabal-install/Distribution/Client/ProjectPlanning.hs

@@ -604,7 +604,7 @@ rebuildInstallPlan verbosity
                        -> (Compiler, Platform, ProgramDb)
                        -> PkgConfigDb
                        -> SolverInstallPlan
-                       -> [PackageSpecifier (SourcePackage loc)]
+                       -> [PackageSpecifier (SourcePackage (PackageLocation loc))]
                        -> Rebuild ( ElaboratedInstallPlan
                                   , ElaboratedSharedConfig )
     phaseElaboratePlan ProjectConfig {
@@ -1212,7 +1212,7 @@ elaborateInstallPlan
   -> DistDirLayout
   -> StoreDirLayout
   -> SolverInstallPlan
-  -> [PackageSpecifier (SourcePackage loc)]
+  -> [PackageSpecifier (SourcePackage (PackageLocation loc))]
   -> Map PackageId PackageSourceHash
   -> InstallDirs.InstallDirTemplates
   -> ProjectConfigShared
@@ -1898,12 +1898,14 @@ elaborateInstallPlan verbosity platform compiler compilerprogdb pkgConfigDB
         --TODO: localPackages is a misnomer, it's all project packages
         -- here is where we decide which ones will be local!
       where
-        shouldBeLocal :: PackageSpecifier (SourcePackage loc) -> Maybe PackageId
+        shouldBeLocal :: PackageSpecifier (SourcePackage (PackageLocation loc)) -> Maybe PackageId
         shouldBeLocal NamedPackage{}              = Nothing
-        shouldBeLocal (SpecificSourcePackage pkg) = Just (packageId pkg)
-        -- TODO: It's not actually obvious for all of the
-        -- 'ProjectPackageLocation's that they should all be local. We might
-        -- need to provide the user with a choice.
+        shouldBeLocal (SpecificSourcePackage pkg) 
+          | LocalTarballPackage _ <- packageSource pkg = Nothing
+          | otherwise = Just (packageId pkg)
+        -- TODO: Is it only LocalTarballPackages we can know about without 
+        -- them being "local" in the sense meant here?
+        --
         -- Also, review use of SourcePackage's loc vs ProjectPackageLocation
 
     pkgsUseSharedLibrary :: Set PackageId