switch kawa from cvs to svn?

switch kawa from cvs to svn?

[Per Bothner]

Kawa is one of the less visible projects partly hosted on sourceware.
(Only mailing list and CVS; web pages and ftp site are on www.gnu.org.)
I'm thinking it makes sense to switch it from using CVS to Subversion.
Since gcc switched last year, I assume converting Kawa would be a fairly
simple operation.  What should I do?
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/

Re: switch kawa from cvs to svn?

[Ian Lance Taylor]

Per Bothner <per@bothner.com> writes:

> Kawa is one of the less visible projects partly hosted on sourceware.
> (Only mailing list and CVS; web pages and ftp site are on www.gnu.org.)
> I'm thinking it makes sense to switch it from using CVS to Subversion.
> Since gcc switched last year, I assume converting Kawa would be a fairly
> simple operation.  What should I do?

Well, we certainly don't have any sort of automated approach.  The
steps would be something like:

Remove the symlink /cvs/kawa to turn off CVS access.

Use cvs2svn to convert the repository.  Test it.

Archive off
    /sourceware/projects/kawa-home/cvsfiles/

Copy the new subversion repository to
    /sourceware/projects/kawa-home/svn/

Create the symlink /svn/kawa.

Ian

Re: switch kawa from cvs to svn?

[Per Bothner]

Ian Lance Taylor wrote:

> Well, we certainly don't have any sort of automated approach.  The
> steps would be something like:

Thanks for reply, but I ran into some problems.

> Remove the symlink /cvs/kawa to turn off CVS access.

[I'll do this latter.  I'm the only committer, so I can control
this somewhat.]

> Use cvs2svn to convert the repository.  Test it.

cvs2svn isn't installed on sourceware, and I guess you might not
want something that intensive running on it, so I tared up
the kawa cvsfiles, scp'd them and ran cvs2svn (from yum) off-site.

> Archive off
>     /sourceware/projects/kawa-home/cvsfiles/

I'll need some more isstructions on this.

> Copy the new subversion repository to
>     /sourceware/projects/kawa-home/svn/

Did that.

> Create the symlink /svn/kawa.

I don't have permission for that.  Could someone do it for me?
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/

Re: switch kawa from cvs to svn?

[Gerald Pfeifer]

On Mon, 22 May 2006, Per Bothner wrote:
>> Copy the new subversion repository to
>> /sourceware/projects/kawa-home/svn/
> Did that.
>> Create the symlink /svn/kawa.
> I don't have permission for that.  Could someone do it for me?

Sure!  Done it is.

Gerald

Re: switch kawa from cvs to svn?

[Per Bothner]

Gerald Pfeifer wrote:
> On Mon, 22 May 2006, Per Bothner wrote:
>>> Copy the new subversion repository to
>>> /sourceware/projects/kawa-home/svn/
>> Did that.
>>> Create the symlink /svn/kawa.
>> I don't have permission for that.  Could someone do it for me?
> 
> Sure!  Done it is.

Thanks!

I managed to get a read-only tree:

svn -q checkout svn://sources.redhat.com/svn/kawa/trunk kawa

However, that also checks out a bunch of uninteresting/obsolete
htdocs and other junk.  Looks I need to play a bit more with cvs2svn.
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/

Re: switch kawa from cvs to svn?

[Per Bothner]

Ian Lance Taylor wrote:
> Well, we certainly don't have any sort of automated approach.  The
> steps would be something like:
> 
> Remove the symlink /cvs/kawa to turn off CVS access.
> 
> Use cvs2svn to convert the repository.  Test it.
> 
> Archive off
>     /sourceware/projects/kawa-home/cvsfiles/
> 
> Copy the new subversion repository to
>     /sourceware/projects/kawa-home/svn/
> 
> Create the symlink /svn/kawa.

Ok, I've got this working now:
$ svn co svn+ssh://bothner@sources.redhat.com/svn/kawa/trunk kawa
[though I haven't tried a check-in yet]

What do I do about cvs commit messages - the kawa-cvs mailing list?
I assume that is what Ian referred to rather cryptically by
"archive off".

What do I do to get viewcvs or whatever should replace cvsweb?
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/

Re: switch kawa from cvs to svn?

[Ian Lance Taylor]

Per Bothner <per@bothner.com> writes:

> Ok, I've got this working now:
> $ svn co svn+ssh://bothner@sources.redhat.com/svn/kawa/trunk kawa
> [though I haven't tried a check-in yet]
> 
> What do I do about cvs commit messages - the kawa-cvs mailing list?
> I assume that is what Ian referred to rather cryptically by
> "archive off".

Actually, all I meant was save a copy of the CVS repository
somewhere.

I don't myself know how the commit mailing lists work with
Subversion.

> What do I do to get viewcvs or whatever should replace cvsweb?

Hmmm, somebody may need to install viewcvs on the sourceware.org side.
The current installation appears to default to gcc, based on
    /usr/local/viewvc-1.0-dev/viewcvs.conf

Ian

Re: switch kawa from cvs to svn?

[Daniel Berlin]

Ian Lance Taylor wrote:
> Per Bothner <per@bothner.com> writes:
> 
>> Ok, I've got this working now:
>> $ svn co svn+ssh://bothner@sources.redhat.com/svn/kawa/trunk kawa
>> [though I haven't tried a check-in yet]
>>
>> What do I do about cvs commit messages - the kawa-cvs mailing list?
>> I assume that is what Ian referred to rather cryptically by
>> "archive off".
> 
> Actually, all I meant was save a copy of the CVS repository
> somewhere.
> 
> I don't myself know how the commit mailing lists work with
> Subversion.
> 

GCC uses svnmailer to direct mail around. You could do the same.

Just look at the hooks directory for gcc in /svn/gcc/hooks


>> What do I do to get viewcvs or whatever should replace cvsweb?
> 
> Hmmm, somebody may need to install viewcvs on the sourceware.org side.
> The current installation appears to default to gcc, based on
>     /usr/local/viewvc-1.0-dev/viewcvs.conf

It does default to gcc.

However I just updated the config to see /svn as a multi-repository
root, so kawa will appear in the list of repositories (in the dropdown
in the upper right).

I can make it default to the repository list (IE it will display the
list of repos when you go to /viewcvs) instead of gcc if that is what we
want.

viewvc 1.0 is also out, if we want to upgrade to a non-dev version :).

Re: switch kawa from cvs to svn?

[Ian Lance Taylor]

Daniel Berlin <dberlin@dberlin.org> writes:

> However I just updated the config to see /svn as a multi-repository
> root, so kawa will appear in the list of repositories (in the dropdown
> in the upper right).
> 
> I can make it default to the repository list (IE it will display the
> list of repos when you go to /viewcvs) instead of gcc if that is what we
> want.

Is there a URL we can use to start showing the top of a specific
repository?  That is what most projects will want.

Ian

Re: switch kawa from cvs to svn?

[Daniel Berlin]

Ian Lance Taylor wrote:
> Daniel Berlin <dberlin@dberlin.org> writes:
> 
>> However I just updated the config to see /svn as a multi-repository
>> root, so kawa will appear in the list of repositories (in the dropdown
>> in the upper right).
>>
>> I can make it default to the repository list (IE it will display the
>> list of repos when you go to /viewcvs) instead of gcc if that is what we
>> want.
> 
> Is there a URL we can use to start showing the top of a specific
> repository?  That is what most projects will want.
> 

http://gcc.gnu.org/viewcvs?root=<repo name>

IE
http://gcc.gnu.org/viewcvs/?root=kawa

> Ian
> 

Re: switch kawa from cvs to svn?

[Per Bothner]

Daniel Berlin wrote:
> Ian Lance Taylor wrote:
>> Is there a URL we can use to start showing the top of a specific
>> repository?  That is what most projects will want.
>>
> 
> http://gcc.gnu.org/viewcvs?root=<repo name>
> 
> IE
> http://gcc.gnu.org/viewcvs/?root=kawa

That works, but I must say it's an "ugly" URL.  For example,
a URL deep into the hierarchy:
http://gcc.gnu.org/viewcvs/trunk/gnu/jemacs/lang/ELisp.java?root=kawa
-but the "top" of the hierarchy (i.e. kawa) is specified using a query
string instead of being part of the path.  That's just wrong.  Not that
fixing it is worth spending much time, of course.

Also, it doesn't work if I replace gcc.gnu.org by sources.redhat.com
or sourceware.org.  Again, a blemish, but no biggie.

-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/

Re: switch kawa from cvs to svn?

[Daniel Berlin]

Per Bothner wrote:
> Daniel Berlin wrote:
>> Ian Lance Taylor wrote:
>>> Is there a URL we can use to start showing the top of a specific
>>> repository?  That is what most projects will want.
>>>
>> http://gcc.gnu.org/viewcvs?root=<repo name>
>>
>> IE
>> http://gcc.gnu.org/viewcvs/?root=kawa
> 
> That works, but I must say it's an "ugly" URL.  For example,
> a URL deep into the hierarchy:
> http://gcc.gnu.org/viewcvs/trunk/gnu/jemacs/lang/ELisp.java?root=kawa
> -but the "top" of the hierarchy (i.e. kawa) is specified using a query
> string instead of being part of the path.  That's just wrong.  Not that
> fixing it is worth spending much time, of course.

This can be fixed easily, but on gcc.gnu.org, it would break existing urls.

I'd rather just have a sourceware install where root_as_url_component is
set.

Then your urls would be
http://www.sourceware.org/viewcvs/kawa/<whatever>

(or viewvc, which is the new name of viewcvs since it does other vcsen now)

> 
> Also, it doesn't work if I replace gcc.gnu.org by sources.redhat.com
> or sourceware.org.  Again, a blemish, but no biggie.

This is just httpd config. Nobody asked for it to be on sourceware.org,
so i hadn't put it there.
I am happy to.

> 

Re: switch kawa from cvs to svn?

[Per Bothner]

Daniel Berlin wrote:
> I'd rather just have a sourceware install where root_as_url_component is
> set.
> 
> Then your urls would be
> http://www.sourceware.org/viewcvs/kawa/<whatever>
> 
> (or viewvc, which is the new name of viewcvs since it does other vcsen now)

That would be great.  I agree using viewcvs in the URL to browse a
Subversion archive might be confusing.

>> Also, it doesn't work if I replace gcc.gnu.org by sources.redhat.com
>> or sourceware.org.  Again, a blemish, but no biggie.
> 
> This is just httpd config. Nobody asked for it to be on sourceware.org,
> so i hadn't put it there.
> I am happy to.

Thanks!
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/

Re: switch kawa from cvs to svn?

[Per Bothner]

Daniel Berlin wrote:
> GCC uses svnmailer to direct mail around. You could do the same.
> 
> Just look at the hooks directory for gcc in /svn/gcc/hooks

Thanks - got that working too.
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/

Re: switch kawa from cvs to svn?

[Gerald Pfeifer]

Per,

On Tue, 23 May 2006, Per Bothner wrote:
>> Just look at the hooks directory for gcc in /svn/gcc/hooks
> Thanks - got that working too.

I wonder whether you could try to write down your experiences
converting kawa from cvs to svn?  I assume there will be several
other projects who are going to go through this conversion, and
such documentation surely would help.

Gerald

Re: switch kawa from cvs to svn?

[Per Bothner]

Gerald Pfeifer wrote:
> Per,
> 
> On Tue, 23 May 2006, Per Bothner wrote:
>>> Just look at the hooks directory for gcc in /svn/gcc/hooks
>> Thanks - got that working too.
> 
> I wonder whether you could try to write down your experiences
> converting kawa from cvs to svn?  I assume there will be several
> other projects who are going to go through this conversion, and
> such documentation surely would help.

I though I'll try to do the actual switchover next week.
I'm hoping someone (Daniel?) will set up viewcvs properly,
though it's not a show-stopper.
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/

Re: switch kawa from cvs to svn?

[Per Bothner]

Thanks to everybody who helped - I've now switched "officially".

Gerald Pfeifer wrote:
> I wonder whether you could try to write down your experiences
> converting kawa from cvs to svn?  I assume there will be several
> other projects who are going to go through this conversion, and
> such documentation surely would help.

Here are some annotated notes/instructions, based on Ian's:

* Disable write access to CVS repository.

(Can defer this for a dry-run.)
Easiest: Remove the symlink /cvs/kawa to turn off CVS access.
Since I'm the only Kawa committer, I didn't worry about this.
I've left the symlink in for now.  It would be nice to switch
CVS to read-only, as a transition step - so I don't accidentally
check stuff into the wrong repository.  However, I don't know
how to do that.  (I don't have the permissions to just do
chmod myseld.)

* Use cvs2svn to convert the repository.  Test it.

cvs2svn isn't installed on sourceware, and it isn't in Fedora.
I grabbed a copy from atrpms.net.  If someone could install
cvs2svn the following instructions would be a lot simpler ...

On sourceware:
cd /cvs/kawa/kawa
[Note I went "down" a level to skip the htdocs etc junk.]
tar czf /tmp/kawa.cvs .
exit to own computer
scp sources.redhat.com:/tmp/kawa.cvs /tmp
mkdir /tmp/kawa; cd /tmp/kawa; tar xzf /tmp/kawa.cvs
In fresh directory:
cvs2svn -s kawa /tmp/kcvs/kawa
cd /tmp/ksvn/kawa
tar czf /tmp/kawa.svn.tgz .
scp /tmp/kawa.svn.tgz sources.redhat.com:/tmp

Copy the new subversion repository to
cd /sourceware/projects/kawa-home/svn/
tar xzf /tmp/kawa.svn.tgz

Create the symlink /svn/kawa:
cd /svn; ln -s /sourceware/projects/kawa-home/svn kawa

Commit messages:
Create files (see gcc or kawa for samples):
/svn/kawa/hooks/post-commit
/svn/kawa/hooks/svnmailer.conf

To browse, this works (thanks to Daniel Berlin):
http://sourceware.org/viewvc/kawa/

To-do: rsync access to repository?
-- 
	--Per Bothner
per@bothner.com   http://per.bothner.com/

Re: switch kawa from cvs to svn?

[Christopher Faylor]

On Tue, Jun 06, 2006 at 05:37:02PM -0700, Per Bothner wrote:
>cvs2svn isn't installed on sourceware, and it isn't in Fedora.
>I grabbed a copy from atrpms.net.  If someone could install
>cvs2svn the following instructions would be a lot simpler ...

I just installed this via "up2date cvs2svn".

cgf

Re: switch kawa from cvs to svn?

[Daniel Berlin]

Per Bothner wrote:
> Thanks to everybody who helped - I've now switched "officially".
> 
> Gerald Pfeifer wrote:
>> I wonder whether you could try to write down your experiences
>> converting kawa from cvs to svn?  I assume there will be several
>> other projects who are going to go through this conversion, and
>> such documentation surely would help.
> 
> Here are some annotated notes/instructions, based on Ian's:
> 
> * Disable write access to CVS repository.
> 
> (Can defer this for a dry-run.)
> Easiest: Remove the symlink /cvs/kawa to turn off CVS access.
> Since I'm the only Kawa committer, I didn't worry about this.
> I've left the symlink in for now.  It would be nice to switch
> CVS to read-only, as a transition step - so I don't accidentally
> check stuff into the wrong repository.  However, I don't know
> how to do that.  (I don't have the permissions to just do
> chmod myseld.)
> 
> * Use cvs2svn to convert the repository.  Test it.
> 
> cvs2svn isn't installed on sourceware, and it isn't in Fedora.
> I grabbed a copy from atrpms.net.  If someone could install
> cvs2svn the following instructions would be a lot simpler ...

I hadn't installed it because the gcc version was custom at the time (it
had many bugfixes that are now in mainline, and massive speed
improvements that aren't yet there).
> To-do: rsync access to repository?

This is automatic if you just call the generate-rsyncd-conf.sh script.
I already taught it what to do about svn repositories.
I just reran it, and you have a shiny new kawa-svn rsync target.