mercurial-plugin does no work with mercurial 1.8

[blokeley@…]

The Browse source link does not appear in the main navigation if the ​mercurial 1.8 binary is used, and trac displays the following warning on every page:

Warning: Can't synchronize with repository "(default)" (Unsupported version control system "hg": Can't find an appropriate component, maybe the corresponding plugin was not enabled? ). Look in the Trac log for more information.

The log file doesn't say anything relevant as far as I can see.

Everything works fine if the ​mercurial 1.7.1 binary is used.

To replicate on Windows XP Pro SP3 32-bit:

1. Install ​Python 2.6.6
2. Install ​setuptools 0.6c11
3. easy_install genshi (0.6)
4. Install ​trac 0.12.2
5. Install ​mercurial 1.8 Python 2.6.2 bindings (Python 2.6.6 bindings are not available)
6. Edit trac.ini.
7. Run tracd from the command line.

[Remy Blank]

I haven't had a chance to test 1.8 yet. Thanks for the heads-up!

Do you happen to know if this is only an issue with the binary installer, or if it also happens when installing from source?

[blokeley@…]

I haven't got a C compiler and haven't tried installing as ​pure Python (yet).

After further testing, I found that ​mercurial 1.7.5 doesn't work either.

If you ask for any tests on this ticket, I'll do what I can.

[Remy Blank]

Replying to blokeley@…:

After further testing, I found that ​mercurial 1.7.5 doesn't work either.

So this must be either a Windows-specific issue, or an issue with the Mercurial installer. It works for me with Mercurial 1.7.5 on Linux.

[Christian Boos]

Works for me, Python 2.6.5 (x86) on Windows 7, using the Mercurial installer from the link provided above (​mercurial-1.8.win32-py2.6.exe).

Please try to see what happens when you use the Mercurial API from the command line.

Besides, which version of the TracMercurial plugin are you using?

[anonymous]

​At least one other person has experienced the same problem. I'll try the API from the command line today.

[Christian Boos]

Chances are that you simply miss the ​msvc9 redist package.

In any case, this is an InstallationIssue.

[blokeley@…]

For the record:

• Problem also exists with ​mercurial 1.8.1.
• The msvc9 redist package was already installed. Re-installing has no effect.
• ​Accessing mercurial from the python command line works fine on all versions.

@cboos: which mercurial installer did you use in comment:4? All versions after 1.7.1 don't work for me and some other people.

This seems to be a genuine bug and I would help if pointed in the right direction.

[blokeley@…]

TracMercurial revision was 0.12.0.28dev_r10621-py2.6.egg

[Christian Boos]

Replying to blokeley@…:

For the record:

• Problem also exists with ​mercurial 1.8.1.
• The msvc9 redist package was already installed. Re-installing has no effect.
• ​Accessing mercurial from the python command line works fine on all versions.

@cboos: which mercurial installer did you use in comment:4? All versions after 1.7.1 don't work for me and some other people.

The 1.8 one you used in the first place (comment:4 updated). I just tried now with 1.7.1 then with 1.8.1, and they both work fine for me (and in each case I see the expected version of Mercurial in /about).

This seems to be a genuine bug and I would help if pointed in the right direction.

Try following the same advices I gave for Subversion troubleshooting on windows, in TracSubversion#checklist-windows, but for the server. The fact that it works on the command line but not for tracd.exe is a bit puzzling, as I don't do anything fancy in the plugin. Possibly the Python interpreter involved in either situation is not the same.

[baloand@…]

I installed mercurial from source: 1.7.5 works, 1.8.4 fails. Same behaviour for tracmercurial 0.12.0.27

System Information

Trac 	0.12.2
FullBlog 	0.1.1
Genshi 	0.6
Mercurial 	1.7.5
mod_wsgi 	3.3 (WSGIProcessGroup WSGIApplicationGroup %{GLOBAL})
psycopg2 	2.4.1
Python 	2.7.2 (default, Jun 12 2011, 15:08:59) [MSC v.1500 32 bit (Intel)]
pytz 	2011g
setuptools 	0.6c11
Subversion 	1.6.15 (r1038135)
jQuery:	1.4.2

Installed Plugins

tick 	N/A 	d:\home\web\trac\scm\plugins\tick.pyc
tracaccountmanager 	0.3dev-r10294 	c:\apps\python27\lib\site-packages\tracaccountmanager-0.3dev_r10294-py2.7.egg
tracdiscussion 	0.8 	c:\apps\python27\lib\site-packages\tracdiscussion-0.8-py2.7.egg
tracdownloads 	0.3 	c:\apps\python27\lib\site-packages\tracdownloads-0.3-py2.7.egg
tracfullblogplugin 	0.1.1 	c:\apps\python27\lib\site-packages\tracfullblogplugin-0.1.1-py2.7.egg
trachttpauth 	1.1 	c:\apps\python27\lib\site-packages\trachttpauth-1.1-py2.7.egg
tracloginrequiredplugin 	0.1.0 	c:\apps\python27\lib\site-packages\tracloginrequiredplugin-0.1.0-py2.7.egg
tracmercurial 	0.12.0.28dev-r10698 	c:\apps\python27\lib\site-packages\tracmercurial-0.12.0.28dev_r10698-py2.7.egg
tractags 	0.6 	c:\apps\python27\lib\site-packages\tractags-0.6-py2.7.egg
tractocmacro 	11.0.0.3 	c:\apps\python27\lib\site-packages\tractocmacro-11.0.0.3-py2.7.egg

[Christian Boos]

Replying to baloand@…:

I installed mercurial from source: 1.7.5 works, 1.8.4 fails.

Fails how? For which operation? What's in the Trac log?

I just tested Trac 0.12-stable with Mercurial 1.8.4 and TracMercurial 0.12.0.28dev-r10698 and couldn't trigger an error.