Open Source SCM roundup

* aegis

must be setuid root.

no network model (changesets can be isolated and shipped around via email or http if you want), otherwise use NFS (!).

* darcs

Oh look, it’s written in Haskell.

NEXT!

* dcvs

It’s a shellscript frontend to CVSup, written in modula-3, that wrappers the existing CVS repository structure.

NEXT!

* arch

Repository format is braindead: Changeset is a log file plus a tarball of all new files and patches; you can create a “cached” revision where it builds the canonical representation of a particular version to avoid having to open 500 tarballs back to root. Repositories regularly grow too large and you have to create new ones (you can base a branch in one repository off a branch in another, so this more or less works). The docs suggest anually. You know, RCS fixed this problem two decades ago?

network API is SFTP; a corrupt client (think, hacked user machine) can blow away the repository itself.

At least it’s not still written in shell.

* meta-CVS

Wrapper around a CVS repository, works on the client side only. Only adds a few features (file type handling, filename and directory versioning, yawn).

* monotone

From the manual, section 2.0.2:

Many commands require you to supply 40-character SHA1 values as arguments, which we refer to as versions.

NEXT!

* openCM

Version 0.1.2alpha7pl2.

NEXT!

* Subversion

Subversions problems are well documented elsewhere, but briefly: You don’t get full functionality without using apache2 as part of your server, it uses sleepycat db as the backend, which causes maintainance nightmares. And it’s just “a versioned filesystem” that happens to implement changesets on top of it. Ugh. Why did they bother using sleepycat db instead of just picking up the RCS file format, which already works just fine and has less baggage? Anyway, it doesn’t do anything really interesting besides atomic changesets, that CVS doesn’t already do.

* vesta

Configuration management AND build tool. Ugh. I do not want to adopt your workflow, thanks anyway.

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3 Responses to Open Source SCM roundup

  1. gdf says:

    SVN also allows renaming files, doesn’t do special stupid crap with directories, doesn’t make branches unusable piles of pain, and does “diff” and “status” operations offline, and a couple of other things which make common use noticably better than CVS.

    They’re still doing things like changing the repository structure, though.

  2. I completely switched from PRCS to Subversion several months ago for my own projects, and I think it’s the superior solution. The only real problem is if you have to backup/restore the whole smash for some reason, as the process is incredibly slow since restoring simply replays every transaction in sequence on the new databases.

    In the words of mutt, it may suck, but it sucks less than everything else.

  3. Dave Terrell says:

    is the use of subversion compatible with reason?