I guess changegroup is better than incoming

[ikiwiki.git] / doc / todo / mercurial.mdwn

diff --git a/doc/todo/mercurial.mdwn b/doc/todo/mercurial.mdwn
index e5de93521876cd2d69a093213ed9a26300402ceb..9635b6880b8f984616700169a5720d63b87a209a 100644 (file)
--- a/doc/todo/mercurial.mdwn
+++ b/doc/todo/mercurial.mdwn
@@ -1,6 +1,3 @@
-* Need to get post commit hook working (or an example of how to use it.)
-  * See below. --[[bma]]
-* rcs_notify is not implemented
 * Is the code sufficiently robust? It just warns when mercurial fails.
 * When rcs_commit is called with a $user that is an openid, it will be
   passed through to mercurial -u. Will mercurial choke on this?
@@ -31,3 +28,55 @@ This should update the working directory and run ikiwiki every time a change is
 > and then committed, and the case where a commit was made directly.
 > It can deadlock if the post-commit hook runs with --refresh in the
 > former case. --[[Joey]]
+
+The problem with --post-commit is that if you delete some pages in $SRC, ikiwiki --setup setupfile --post-commit will not delete them in $DEST.
+
+I add the following to .hg/hgrc:(I use changegroup since I don't think we need refresh per changeset, please point out if I am wrong.)
+
+    [hooks]
+    changegroup = hg update >&2 && ikiwiki --setup path.to.setup.file --refresh
+    post-commit = ikiwiki --setup path.to.setup.file --refresh
+
+I tried the follwing commands in $SRC:
+
+    touch deadlocktest.mdwn
+    hg add
+    hg ci
+
+No deadlock happens.  (Also I push to the $SRC from another machine, again, no deadlock.  If there is conflicts between $SRC and my own repo, hg pull will abort.  You have to pull, merge and push again.)
+
+
+
+Of course these tests are too simple.  The problem is I have no idea when the deadlock will happen. If someone is kind enough to point out, I will run more test.
+
+
+***
+
+I have a few notes on mercurial usage after trying it out for a while:
+
+1. I have been using ikiwiki's `--post-commit` option without apparent problems. I'm the only current user of my wiki, though.
+
+1. The `ikiwiki.setup` file included in ikiwiki works with mercurial's `hgserve`, which is not the preferred solution. Mercurial's `hgwebdir.cgi` is more flexible and doesn't require running a server. I have this in my .setup file:
+
+        # Mercurial stuff.
+        rcs => "mercurial",
+        historyurl => "http://localhost/cgi-bin/hgwebdir.cgi/ikiwiki/log/tip/\[[file]]",
+        diffurl => "http://localhost/cgi-bin/hgwebdir.cgi/ikiwiki/diff/tip/\[[file]]",
+
+1. I have noticed that running `ikiwiki` after a change to the wiki adds files to a directory called `recentchanges` under `$srcdir`. I don't understand why such files are needed; worse, they are not added to mercurial's list of tracked files, so they polute the output of `hg log`. Is this a bug? Should mercurial's commit hook be modified to add these files before the commit?
+
+--buo
+
+> No, those files should not be added to revision control. --[[Joey]]
+
+>> OK. I see two problems:
+
+>> 1. If I clone my wiki, I won't get an exact copy of it: I will lose the recentchanges history. This could be an acceptable limitation but IMO this should be documented.
+
+>>> The history is stored in mercurial. How will it be lost?
+
+>> 2. The output of `hg status` is polluted. This could be solved trivially by adding a line containing `recentchanges` to `.hgignore`. Another alternative would be to store the `recentchanges` directory inside `$srdcir/.ikiwiki`.
+
+>> I think the ideal solution would be to build `$destdir/recentchanges/*` directly from the output of `hg log`. --[[buo]]
+
+>>>> That would be 100 times as slow, so I chose not to do that. --[[Joey]]