GitHub - evmar/gat: git clone in haskell

Branches Tags

Name		Name	Last commit message	Last commit date
Latest commit History 145 Commits
testdata		testdata
.gitignore		.gitignore
COPYING		COPYING
Color.hs		Color.hs
Commit.hs		Commit.hs
Commit_perftest.hs		Commit_perftest.hs
Commit_test.hs		Commit_test.hs
Delta.hs		Delta.hs
Delta_test.hs		Delta_test.hs
Diff.hs		Diff.hs
FileMode.hs		FileMode.hs
FileMode_test.hs		FileMode_test.hs
Gat.hs		Gat.hs
Index.hs		Index.hs
Log.hs		Log.hs
Makefile		Makefile
Microbench.hs		Microbench.hs
Object.hs		Object.hs
ObjectStore.hs		ObjectStore.hs
ObjectStore_test.hs		ObjectStore_test.hs
Pack.hs		Pack.hs
Pack_test.hs		Pack_test.hs
Pager.hs		Pager.hs
README		README
Refs.hs		Refs.hs
RevParse.hs		RevParse.hs
RevParse_test.hs		RevParse_test.hs
Setup.lhs		Setup.lhs
Shared.hs		Shared.hs
State.hs		State.hs
gat.cabal		gat.cabal

Repository files navigation

Why?
- To learn how Git works.
- For fun.

Goals/principles:
- a Gat tree should always be usable by Git.
- be comparable, speed-wise, to Git.
- remove, unify, and simplify the UI; it's ok to be less "powerful" than Git.
- more options are not always better.
- it's ok to break backwards UI compatibility for greater consistency.  it's ok
  to remove features.
- liberally steal from other, better UIs (in particular darcs).

Ideas:
- represent the whole index/tree distinction by having a "stage" command,
  which stages files for commit.  then avoid it as much as possible.
- make "commit" like "commit -a", while "commit --staged" (or in response to a
  prompt if "commit" with stated content) like "commit".
- similarly, "diff" is always "diff HEAD", while "diff --staged" like
  "diff --cached".
- eliminate the many modes of reset.  flushing the index is a stage subcommand;
  resetting the tree is "revert", and fiddling with the branch pointers (reset
  --soft) is a separate command.
- figure out a better name / mode of operation for "rebase".  provide a more
  darcs-like interactive ui.
- in general, have the -i flag (for commit, stage, rebase) be interactive like
  darcs.