Create source package:
- clean source directory
- find patch-level that matches .orig's
- check it really matches them
- check for uncommitted changes outside debian/ directory
- populate debian/patches with diff -u format patches and metadata
- create the -patches tarball
Source package to darcs:
- unpack .orig's
- darcs init; darcs add -R .; darcs record -a 'upstream blah'; darcs tag
- unpack patches tarball
- for each patch in debian/patches:
- apply
- darcs add/remove as appropriate
- darcs record -a 'patch X'