fix emerge build rfp

inary/operations/build.py

@@ -756,7 +756,7 @@ class Builder:
 
             # For binary types, WorkDir is usually "."
         archive = self.spec.source.archive[0]
-        if archive.type == "binary":
+        if archive.type == "binary" or not os.path.isdir(src_dir):
             return self.pkg_work_dir()
         else:
             return src_dir
@@ -786,7 +786,7 @@ class Builder:
                 command += "fakeroot -u "
             else:
                 command += "unshare -r "
-        if os.path.exists(src_dir):
+        if os.path.isdir(src_dir):
             os.chdir(src_dir)
         else:
             raise Error(

inary/util/files.py

@@ -225,6 +225,9 @@ def check_file_hash(filename, hash):
     """Check the file's integrity with a given hash."""
     if os.path.isdir(filename+"/.git"):
         return True
+    if hash == "SKIP":
+        ctx.ui.warning(_("File hash control skip detected."))
+        return True
     return sha1_file(filename) == hash