dgit(7): Updated `trouble' section to suggest deletion

[dgit.git] / dgit.7

diff --git a/dgit.7 b/dgit.7
index 6f5844b4e694c19a187e3f0c29b699f55702a9a4..6ad6ecb8e0ff1ba944aa68ba0c8d69f8db529ca7 100644 (file)
--- a/dgit.7
+++ b/dgit.7
@@ -56,8 +56,12 @@ server to authenticate pushes.
 Uploads made by dgit contain an additional field
 .B Dgit
 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.
+This specifies: a commit (an ancestor of the dgit/suite
+branch) whose tree is identical to the unpacked source upload;
+the distro to which the upload was made;
+a tag name which can be used to fetch the git commits;
+and
+a url to use as a hint for the dgit git server for that distro.
 
 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
@@ -112,6 +116,57 @@ using dgit look like
 reasonable
 changes made in an NMU: in a `3.0 (quilt)' package the delta from the
 previous upload is recorded in new patch(es) constructed by dpkg-source.
+.SH COMBINED SUITES
+dgit can synthesize a combined view of several underlying suites.
+This is requested by specifying, for
+.I suite,
+a comma-separated list:
+.IP
+.IR mainsuite \fB,\fR subsuite ...
+.LP
+This facility is available with dgit clone, fetch and pull, only.
+
+dgit will fetch the same package from each specified underlying suite,
+separately (as if with dgit fetch).
+dgit will then generate a pseudomerge commit
+on the tracking branch
+.BI remotes/dgit/dgit/ suite
+which has the tip of each of the underlying suites
+as an ancestor,
+and which contains the same as the suite which
+has the highest version of the package.
+
+The package must exist in mainsuite,
+but need not exist in the subsuites.
+
+If a specified subsuite starts with
+.B -
+then mainsuite is prepended.
+
+So, for example,
+.B stable,-security
+means to look for the package in stable, and stable-security,
+taking whichever is newer.
+If stable is currently jessie,
+dgit clone would leave you on the branch
+.BR dgit/jessie,-security .
+
+Combined suites are not supported by the dgit build operations.
+This is because those options are intended for building for
+uploading source packages,
+and look in the changelog to find the relevant suite.
+It does not make sense to name a dgit-synthesised combined suite
+in a changelog,
+or to try to upload to it.
+
+When using this facility, it is important to always specify the
+same suites in the same order:
+dgit will not be make a coherent fast-forwarding history
+view otherwise.
+
+The history generated by this feature is not normally suitable
+for merging back into upstreams,
+as it necessarily contains unattractive pseudomerges.
 .SH LIMITATIONS
 Because the synthesis
 of the suite tracking branches
@@ -209,7 +264,7 @@ is a patches-applied or patches-unapplied tree.
 Split view conversions are cached in the ref
 dgit-intern/quilt-cache.
 This should not be manipulated directly.
-.SH FILES IN THE SOURCE PACKAGE BUT NOT IN GIT - AUTOTOOLS ETC.
+.SH FILES IN THE ORIG TARBALL BUT NOT IN GIT - AUTOTOOLS ETC.
 This section is mainly of interest to maintainers who want to use dgit
 with their existing git history for the Debian package.
 
@@ -239,14 +294,13 @@ the git repository finds the program just as easy to build as someone
 who uses the tarball.
 .TP
 \(bu
-Have separate git branches which do contain the extra files, and after
-regenerating the extra files (whenever you would have to anyway),
-commit the result onto those branches.
-.TP
-\(bu
-Provide source packages which lack the files you don't want
-in git, and arrange for your package build to create them as needed.
-This may mean not using upstream source tarballs and makes the Debian
+Delete the files from your git branches,
+and your Debian source packages,
+and carry the deletion as a delta from upstream.
+(With `3.0 (quilt)' this means represeting the deletions as patches.
+You may need to pass --include-removal to dpkg-source --commit,
+or pass corresponding options to other tools.)
+This can make the Debian
 source package less useful for people without Debian build
 infrastructure.
 .LP
@@ -272,7 +326,7 @@ to delete these files.
 .LP
 dpkg-source does not
 (with any of the commonly used source formats)
-represent deletion of files (outside debian/) present in upstream.
+represent deletion of binaries (outside debian/) present in upstream.
 Thus deleting such files in a dpkg-source working tree does not
 actually result in them being deleted from the source package.
 Thus