.TH dgit 1 "" "Debian Project" "dgit"
dgit \- git integration with the Debian archive
[\fIdgit\-opts\fP] \fBclone\fP [\fIdgit\-opts\fP]
\fIpackage\fP [\fIsuite\fP] [\fB./\fP\fIdir|\fB/\fP\fIdir]
[\fIdgit\-opts\fP] \fBfetch\fP|\fBpull\fP [\fIdgit\-opts\fP]
[\fIdgit\-opts\fP] \fBpush\fP [\fIdgit\-opts\fP]
treats the Debian archive as a version control system, and
bidirectionally gateways between the archive and git. The git view of
the package can contain the usual upstream git history, and will be
augmented by commits representing uploads done by other developers not
using dgit. This git history is stored in a canonical location known
which lives outside the Debian archive (currently, on Alioth).
.B dgit clone
.B dgit fetch
consult the archive and dgit-repos and fetch and/or construct the
git view of the history. With clone, the destination directory (by
default, the package name in the current directory) will be created,
and the new directory's `origin' remote will be set up to point to
the package's dgit-repos tree.
.B dgit build
with some suitable options. Options after
will be passed on to git-buildpackage. It is not necessary to
use dgit build; it is OK to use any approach which ensures that
the generated source package corresponds to the relevant git commit.
Tagging and signing should be left to dgit push.
.B dgit push
does an `upload', pushing the current HEAD to the archive (as a source
package) and to dgit-repos (as git commits). This also involves
making a signed git tag, and signing the files to be uploaded to the
.SH MODEL AND WORKFLOW
You may use any suitable git workflow with dgit, provided you
satisfy dgit's requirements:
dgit maintains a pseudo-remote called
.BR dgit ,
with one branch per suite. This remote cannot be used with
repository for each package contains one ref per suite named
\fBrefs/dgit/\fR\fIsuite\fR. These should be pushed to only by
dgit. They are fast forwarding. Each push on this branch
corresponds to an upload (or attempted upload).
However, it is perfectly fine to have other branches in dgit-repos;
normally the dgit-repos repo for the package will be accessible via
the remote name `origin'.
dgit push can operate on any commit which is a descendant of the
current dgit/suite tip in dgit-repos.
Uploads made by dgit contain an additional field
in the source package .dsc. (This is added by dgit push.)
This specifies a commit (an ancestor of the dgit/suite
branch) whose tree is identical to the unpacked source upload.
Uploads not made by dgit are represented in git by commits which are
synthesised by dgit. The tree of each such commit corresponds to the
unpacked source; there is an origin commit with the contents, and a
psuedo-merge from last known upload - that is, from the contents of
the dgit/suite branch.
dgit expects repos that it works with to have a
remote. This refers to the well-known dgit-repos location
(currently, the dgit-repos project on Alioth). dgit fetch updates
the remote tracking branch for dgit/suite.
.BR --dry-run | -n
Go through the motions, fetching all information needed, but do not
actually update the output(s). For push, dgit does
the required checks and leaves the new .dsc in a temporary file,
but does not sign, tag, push or upload.
.BI -k keyid
for signing the tag and the upload.
does not sign tags or uploads (meaningful only with push).
.BI -p package
Specifies that we should process source package
rather than looking in debian/control or debian/changelog.
Valid with dgit fetch and dgit pull, only.
.BR -N | --new
The package may be new in this suite. Without this, dgit will
refuse to push.
Prints debugging information to stderr. Repeating the option produces
more output (currently, up to -DD is meaningfully different).
.BI -c name = value
Specifies a git configuration option. dgit itself is also controlled
by git configuration options.
.RI \fB--dget=\fR program |\fB--dput=\fR program |\fB--debsign=\fR program
Specifies alternative programs to use instead of dget, dput
.RI \fB--dget:\fR option |\fB--dput:\fR option |\fB--debsign:\fR option
Specifies a single additional option to pass to dget, dput or
debsign. Use repeatedly if multiple additional options are required.
.BI -C changesfile
Specifies the .changes file which is to be uploaded. By default
dgit push looks for single .changes file in the parent directory whose
filename suggests it is for the right package and version.
.BI --existing-package= package
dgit push needs to canonicalise the suite name. But currently
there is no way to ask the archive to do this without knowing the
name of an existing package. Without --new we can just use the
package we are trying to push. But with --new that will not work, so
we guess that
exists in the target suite. If it doesn't, you can use this option to
specify a package which does. If the suite is empty, bad luck.
dgit looks at the following git config keys to control its behaviour.
You may set them with git-config (either in system-global or per-tree
configuration), or provide
.BI -c key = value
on the dgit command line.
.BI dgit-suite. suite .distro
.BI dgit-distro. distro .git-url
.BI dgit-distro. distro .git-host
.BI dgit-distro. distro .git-proto
.BI dgit-distro. distro .git-path
.BI dgit-distro. distro .git-check
.BI dgit-distro. distro .git-create
.BI dgit-distro. distro .upload-host
.BI dgit-distro. distro .mirror
.BI dgit-distro. distro .archive-query
.BI dgit-distro. distro .archive-query-default-component
.BI dgit-distro. distro .ssh
.BR dgit.default. *
.BR dgit-distro. \fIdistro\fR . *
We should be using some kind of vhost/vpath setup for the git repos on
alioth, so that they can be moved later if and when this turns out to
be a good idea.
Debian Policy needs to be updated to describe the new Vcs-Dgit-Master
field (and to specify that it is an RC bug for that field to refer
to an unavailable commit).
The method of canonicalising suite names is bizarre. See the
option for one of the implication.s
dgit push should perhaps do `git push origin', or something similar,
The mechanism for checking for and creating per-package repos on
alioth is a hideous bodge. One consequence is that dgit currently
only works for people with push access.
Debian Maintainers are currently not able to push, as there is not
currently any mechanism for determining and honouring the archive's
ideas about access control. Currently only DDs can push.
dgit's representation of format `3.0 (quilt)' source packages does not
represent the patch stack. Currently the patch series representation
cannot round trip through the archive. Ideally dgit would represent a
quilty package with an origin commit of some kind followed by the
patch stack as a series of commits followed by a pseudo-merge (to make
the branch fast-forwarding). This would also mean a new `dgit
rebase-prep' command or some such to turn such a fast-forwarding
branch back into a rebasing patch stack, and a `force' option to dgit
push (perhaps enabled automatically by a note left by rebase-prep)
which will make the required pseudo-merge.
If the dgit push fails halfway through, it should be restartable and
idempotent. However this is not true for the git tag operation.
Also, it would be good to check that the proposed signing key is
available before starting work.
dgit's handling of .orig.tar.gz is not very sophisticated. Ideally
the .orig.tar.gz could be transported via the git repo as git tags.
Doing this is made more complicated by the possibility of a `3.0
(quilt)' package with multiple .orig tarballs.
The error messages are often unhelpfully terse and tend to refer to
line numbers in dgit.
The option parser requires values to be cuddled to the option name.
dgit assumes knowledge of the archive layout. There appears to be no
sane way to find the path in the archive pool of the .dsc for a
particular suite. I'm assured that the archive layout is a
`well known algorithm' by now.
--dry-run often does not work with fetch, even though this is a
logically plausible request. (It fails, instead.)