Both Git and Darcs are supported
- Darcs implementation applies right on the bare repo, I haven't tested to make
sure it works right (federated MR demo is going to be only for Git)
- Git implementation clones to temporary repo, runs `git am` on it to apply,
then pushes to the real bare repo (because `git am` doesn't work on bare
repos; I haven't tested yet to see how it handles conflicts; cloning and
pushing should be efficient since the refs are just hardlinked rather than
copied)
This is such a huge patch, it's probably impossible to tell what it does by
looking at the code. One thing is clear: It changes *everything* :P so here's
an overview:
- There are now 5 types of actors, each having its own top-level route
- So projects, repos, etc. are no longer "under" sharers
- Actor routes are now based on their KeyHashid, there are no "idents" anymore,
i.e. URLs look random and don't contain user or repo names
- No sharers anymore; people and groups are distinct entities not sharing a
common namespace or anything like that
- Project has been renamed to Deck and it simply means a ticket tracker; repos
are no longer "under" projects
- In addition to Person, Group, Repo and Deck, there's a new actor type Loom,
which is a patch tracker; i.e. Repo actors don't manage MRs anymore
- All C2S and S2S is temporarily disabled, because huge changes to the whole
code are required and I'll do them gradually in the next patches
- Since form-based actions are implemented using C2S, they're disabled as well,
so Vervis is now essentially read-only
- Some views have been temporarily removed, e.g. repo history and commit view
- A huge set of DB migrations has been added to adapt the DB to these changes;
I haven't tested them yet on a read DB so there may be errors there; I'll fix
them in the next patches if I find any (probably going to test on the main
instance where Vervis itself is hosted...)
- Some modules got tech upgrades, e.g. LocalActor became a higher-kinded type
and a similar pattern is probably relevant for several other types
- There's an 'Actor' entity in the DB schema now, and all 5 actor types use it
for common things like inbox and outbox
- Although inbox and outbox are used only by Actor, so essentially could be
removed, I haven't removed them; that's because I wonder if at some point
users can have a tree of inboxes much like in email; I don't have an excuse
for Outbox, but anyway, leaving them as is for now
- Workflows, roles and collaborators are partially removed/unused until I
figure out a sane federated way to provide these features
- Since repo routes don't contain a "sharer" anymore, SSH URIs are now simpler,
they already look like user@host/repo regardless of who "controls" that repo
I'm not sure this will improve much, because the error messages come from
attoparsec, but at least the message text won't be constant, which was the
previous situation.
Before this patch, if you ran more than 1 instance as the same OS user, they'd
use the same config file path and overwrite it and cause post hooks to have
errors due to wrong config being used.
In Darcs, any command can have a post hook (and a pre hook), and the hook
command can be set using a command-line option to the darcs command that you
run. So, in the Vervis SSH server, if we add a --posthook option when running
`darcs apply` to apply remotely received patches, we get a chance to process
the patch data much like in the git post-receive hook.
The setup this patch creates is similar to the git one: It writes a
_darcs/prefs/defaults file to all Darcs repos, and that defaults file sets the
posthook line for `darcs apply`. The posthook line simply executes the actual
hook program written in Haskell.
The current hook program is a one-liner that prints a line to stdout, so every
time you `darcs push` you can tell the hook got executed. The next step is to
implement the actual hook logic, by reading patch data from the environment
variable in which Darcs puts it.
