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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes

 

 

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hanno at hannosch

Sep 10, 2009, 1:12 PM

Post #1 of 18 (1270 views)
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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes

On Thu, Sep 10, 2009 at 9:46 PM, Alex Chapman<achapman [at] zope> wrote:
> Log message for revision 103721:
>  keep trunk version at 0. Update changes

I think I've seen the practice of denoting the version on trunk as
"zero" from Jim already.

It is in conflict with
http://docs.zope.org/zopetoolkit/process/releasing-software.html
though.

The majority of packages still uses the "version='3.4.2dev'" scheme
for trunk or branches. Pointing to the next release to be made with a
dev marker.

Are there any particular reasons, why this policy should be changed?

Hanno
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benji at zope

Sep 10, 2009, 1:23 PM

Post #2 of 18 (1242 views)
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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

On Thu, Sep 10, 2009 at 4:12 PM, Hanno Schlichting <hanno [at] hannosch> wrote:
> On Thu, Sep 10, 2009 at 9:46 PM, Alex Chapman<achapman [at] zope> wrote:
>> Log message for revision 103721:
>>  keep trunk version at 0. Update changes
>
> I think I've seen the practice of denoting the version on trunk as
> "zero" from Jim already.
>
> It is in conflict with
> http://docs.zope.org/zopetoolkit/process/releasing-software.html
> though.
>
> The majority of packages still uses the "version='3.4.2dev'" scheme
> for trunk or branches. Pointing to the next release to be made with a
> dev marker.
>
> Are there any particular reasons, why this policy should be changed?

I like "0" for two reasons:

1) it doesn't require predicting what the next release will be,

2) if you accidentally make a trunk release no one will accedentally use it
because it will be the "oldest" release on PyPI instead of the newest,

Three, I like it for three reasons:

3) so superfluous version bumps on the trunk

Amongst the reasons I like it are that:

- when using a checkout as a develop egg you don't have to worry about finding
out the exact version used on the trunk, you can always just use 0.
--
Benji York
Senior Software Engineer
Zope Corporation
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fdrake at gmail

Sep 10, 2009, 1:28 PM

Post #3 of 18 (1240 views)
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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

2009/9/10 Benji York <benji [at] zope>:
> 3) so superfluous version bumps on the trunk

s/so/no/


-Fred

--
Fred L. Drake, Jr. <fdrake at gmail.com>
"Chaos is the score upon which reality is written." --Henry Miller
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wichert at wiggy

Sep 10, 2009, 2:20 PM

Post #4 of 18 (1239 views)
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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

On 2009-9-10 22:23, Benji York wrote:
> On Thu, Sep 10, 2009 at 4:12 PM, Hanno Schlichting<hanno [at] hannosch> wrote:
>> On Thu, Sep 10, 2009 at 9:46 PM, Alex Chapman<achapman [at] zope> wrote:
>>> Log message for revision 103721:
>>> keep trunk version at 0. Update changes
>>
>> I think I've seen the practice of denoting the version on trunk as
>> "zero" from Jim already.
>>
>> It is in conflict with
>> http://docs.zope.org/zopetoolkit/process/releasing-software.html
>> though.
>>
>> The majority of packages still uses the "version='3.4.2dev'" scheme
>> for trunk or branches. Pointing to the next release to be made with a
>> dev marker.
>>
>> Are there any particular reasons, why this policy should be changed?
>
> I like "0" for two reasons:
>
> 1) it doesn't require predicting what the next release will be,
>
> 2) if you accidentally make a trunk release no one will accedentally use it
> because it will be the "oldest" release on PyPI instead of the newest,

Doesn't it break all versioned dependencies on that package?

Wichert.

--
Wichert Akkerman <wichert [at] wiggy> It is simple to make things.
http://www.wiggy.net/ It is hard to make things simple.
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benji at zope

Sep 10, 2009, 2:24 PM

Post #5 of 18 (1239 views)
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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

On Thu, Sep 10, 2009 at 5:20 PM, Wichert Akkerman <wichert [at] wiggy> wrote:
> On 2009-9-10 22:23, Benji York wrote:
>> 2) if you accidentally make a trunk release no one will accedentally use
>> it
>>    because it will be the "oldest" release on PyPI instead of the newest,
>
> Doesn't it break all versioned dependencies on that package?

I don't understand the question, so I'll say "no". ;)
--
Benji York
Senior Software Engineer
Zope Corporation
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wichert at wiggy

Sep 10, 2009, 11:20 PM

Post #6 of 18 (1243 views)
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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

On 2009-9-10 23:24, Benji York wrote:
> On Thu, Sep 10, 2009 at 5:20 PM, Wichert Akkerman<wichert [at] wiggy> wrote:
>> On 2009-9-10 22:23, Benji York wrote:
>>> 2) if you accidentally make a trunk release no one will accedentally use
>>> it
>>> because it will be the "oldest" release on PyPI instead of the newest,
>>
>> Doesn't it break all versioned dependencies on that package?
>
> I don't understand the question, so I'll say "no". ;)

Suppose you are working on an app which includes a package that depends
on A >= 2.1 to make sure it can use a new API introduced in A 2.1. If
you then add a develop egg for A to do some work on it things break with
this policy because it will have version 0 and can no longer satisfy the
>= 2.1 requirement.

Wichert.


--
Wichert Akkerman <wichert [at] wiggy> It is simple to make things.
http://www.wiggy.net/ It is hard to make things simple.
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benji at zope

Sep 11, 2009, 5:12 AM

Post #7 of 18 (1223 views)
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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

On Fri, Sep 11, 2009 at 2:20 AM, Wichert Akkerman <wichert [at] wiggy> wrote:
> Suppose you are working on an app which includes a package that depends on A
>>= 2.1 to make sure it can use a new API introduced in A 2.1. If you then
> add a develop egg for A to do some work on it things break with this policy
> because it will have version 0 and can no longer satisfy the >= 2.1
> requirement.

Gotcha. Yep that's a down side of the zero approach. For me the scale
still tips to using zero as the trunk version.
--
Benji York
Senior Software Engineer
Zope Corporation
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faassen at startifact

Sep 11, 2009, 5:53 AM

Post #8 of 18 (1223 views)
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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

Benji York wrote:
> On Fri, Sep 11, 2009 at 2:20 AM, Wichert Akkerman <wichert [at] wiggy> wrote:
>> Suppose you are working on an app which includes a package that depends on A
>>> = 2.1 to make sure it can use a new API introduced in A 2.1. If you then
>> add a develop egg for A to do some work on it things break with this policy
>> because it will have version 0 and can no longer satisfy the >= 2.1
>> requirement.
>
> Gotcha. Yep that's a down side of the zero approach. For me the scale
> still tips to using zero as the trunk version.

Well, the official policy of the ZTK is still to use the 'dev' approach.
We can't just suddenly start to use something else just like that,
without discussion.

So, could you please follow this policy for ZTK packages in SVN?

In addition, if you are going to release to pypi, there are tools like
zest.releaser which make doing a release in the official way a snap
(version-bump and all).

Regards,

Martijn

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fdrake at gmail

Sep 11, 2009, 6:35 AM

Post #9 of 18 (1213 views)
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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

On Fri, Sep 11, 2009 at 8:53 AM, Martijn Faassen <faassen [at] startifact> wrote:
> So, could you please follow this policy for ZTK packages in SVN?

I suspect it would help if packages that are part of the ZTK have that
indicated somewhere convenient, like near where the version number is
specified in the setup.py file. Possibly with a link to the ZTK
release policies.

When making changes, we're often considering the relevant packages in
isolation or in the context of our own applications, so a pointer to
additional policies that apply is helpful.


-Fred

--
Fred L. Drake, Jr. <fdrake at gmail.com>
"Chaos is the score upon which reality is written." --Henry Miller
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benji at zope

Sep 11, 2009, 6:56 AM

Post #10 of 18 (1221 views)
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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

On Fri, Sep 11, 2009 at 8:53 AM, Martijn Faassen <faassen [at] startifact> wrote:
> Well, the official policy of the ZTK is still to use the 'dev' approach.
> We can't just suddenly start to use something else just like that,
> without discussion.

Absolutely. This is that discussion. :)

> In addition, if you are going to release to pypi, there are tools like
> zest.releaser which make doing a release in the official way a snap
> (version-bump and all).

That's good to know.
--
Benji York
Senior Software Engineer
Zope Corporation
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gary.poster at gmail

Sep 11, 2009, 7:30 AM

Post #11 of 18 (1218 views)
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Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

On Sep 11, 2009, at 9:53 AM, Benji York wrote:

> On Fri, Sep 11, 2009 at 9:07 AM, Marius Gedminas <marius [at] gedmin>
> wrote:
>> On Thu, Sep 10, 2009 at 04:23:31PM -0400, Benji York wrote:
>>> 3) [no] superfluous version bumps on the trunk
>>
>> I don't understand this one. Could you elaborate?
>
> The current practice is that after doing a release you have to change
> the trunk version to the next release number (a version bump).
>
>>> - when using a checkout as a develop egg you don't have to worry
>>> about finding
>>> out the exact version used on the trunk, you can always just use
>>> 0.
>>
>> That's nice. I think I tried to use
>>
>> [versions]
>> my-dev-package =
>
> Yeah, it'd be nice if buildout allowed that or some other syntax (like
> "my-dev-package = *").

...Mmm, what Marius describes works for me, I believe. I've
definitely used that trick and showed it to others, at least. Maybe
it worked by mistake? /me wonders if he was doing something wrong, or
if he remembersbut doesn't take the time to try it again right now.

But to the bigger discussion here, I'm in the "I don't like 0" camp,
as I've said before.

I like seeing the version number when I look at the trunk, which I do
when I am doing different things than when I look at PyPI.

I am skeptical of an argument that it helps prevent accidental
releases. Is it not possible to make a '0' release? If it is
possible, then you have to be just as careful. I think contemplating
automation (e.g., release helpers that help you do the right thing,
and warn you if it looks like you are doing a wrong one) is a better
avenue in any case. Certainly the automation of setup.py sdist
register upload is a thing of beauty in my eyes, and it could be
improved. zest.releaser might be good, dunno.

Also, since I'm also in the "setup.py should be able to specify
minimum versions" camp (admittedly unlike others, such as Benji, to my
continued surprise), I have another issue. When you use externals/
develop-eggs to organize your dependencies during interlocked jobs
like my recent efforts with zc.buildout/zc.recipe.testing/
z3c.recipe.filetemplate, and you want to set a minimum dependency for
one or more of the develop-eggs, this breaks if your external has a
version number of 0.

The '0' pattern seems like a loss for me, and at best a minimal win
for those that are arguing for it. I'd prefer not to see a change,
with the usual associated costs of communication and check-in police.

That said, I don't this is worth a big argument, or even a big
discussion (or even this email? :-). If the Zope triumverate or
whatever it is these days changes the release document, so be it. :-)

Gary

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faassen at startifact

Sep 11, 2009, 7:41 AM

Post #12 of 18 (1219 views)
Permalink
Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

Benji York wrote:
> On Fri, Sep 11, 2009 at 8:53 AM, Martijn Faassen <faassen [at] startifact> wrote:
>> Well, the official policy of the ZTK is still to use the 'dev' approach.
>> We can't just suddenly start to use something else just like that,
>> without discussion.
>
> Absolutely. This is that discussion. :)

It's good we're having it now, but I'd much prefer to have one in advance.

Regards,

Martijn

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faassen at startifact

Sep 11, 2009, 7:45 AM

Post #13 of 18 (1218 views)
Permalink
Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

Gary Poster wrote:
[snip]
> ...Mmm, what Marius describes works for me, I believe. I've
> definitely used that trick and showed it to others, at least. Maybe
> it worked by mistake? /me wonders if he was doing something wrong, or
> if he remembersbut doesn't take the time to try it again right now.

I'd worked for me too, but perhaps it just works by random chance. :)

> zest.releaser might be good, dunno.

I was skeptical of using release helpers, but then I used zest.releaser
and I haven't looked back. A friend of mine had the same experience.

> Also, since I'm also in the "setup.py should be able to specify
> minimum versions" camp (admittedly unlike others, such as Benji, to my
> continued surprise),

Doing this is official ZTK policy, actually. (though bugfix versions are
too fine-grained to require in this policy)

[snip]
> That said, I don't this is worth a big argument, or even a big
> discussion (or even this email? :-). If the Zope triumverate or
> whatever it is these days changes the release document, so be it. :-)

It didn't think our release policy was worth any argument - I thought we
had people on board with it by now. But apparently I was wrong.

Regards,

Martijn

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benji at zope

Sep 11, 2009, 7:45 AM

Post #14 of 18 (1219 views)
Permalink
Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

On Fri, Sep 11, 2009 at 10:30 AM, Gary Poster <gary.poster [at] gmail> wrote:
> Also, since I'm also in the "setup.py should be able to specify minimum
> versions" camp (admittedly unlike others, such as Benji, to my continued
> surprise)

I've gotta keep you guessing somehow. ;)

> The '0' pattern seems like a loss for me, and at best a minimal win for
> those that are arguing for it.  I'd prefer not to see a change, with the
> usual associated costs of communication and check-in police.

Given the way the ZTK policies have shaped up I think I have to agree
that zero on the trunk will probably be a small loss for most people
working on ZTK projects.

For the way I develop non-ZTK software the zeros are a small win.
Luckily most of the software I develop isn't in the ZTK, so I'm fine
with the status quo.
--
Benji York
Senior Software Engineer
Zope Corporation
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benji at zope

Sep 11, 2009, 7:47 AM

Post #15 of 18 (1218 views)
Permalink
Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

On Fri, Sep 11, 2009 at 10:41 AM, Martijn Faassen
<faassen [at] startifact> wrote:
> Benji York wrote:
>> On Fri, Sep 11, 2009 at 8:53 AM, Martijn Faassen <faassen [at] startifact> wrote:
>>> Well, the official policy of the ZTK is still to use the 'dev' approach.
>>> We can't just suddenly start to use something else just like that,
>>> without discussion.
>>
>> Absolutely.  This is that discussion. :)
>
> It's good we're having it now, but I'd much prefer to have one in advance.

Alex's change was a simple mistake. He works with packages that use
both styles. There wasn't any subversive intent.
--
Benji York
Senior Software Engineer
Zope Corporation
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fdrake at gmail

Sep 11, 2009, 7:51 AM

Post #16 of 18 (1221 views)
Permalink
Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

On Fri, Sep 11, 2009 at 10:30 AM, Gary Poster <gary.poster [at] gmail> wrote:
> Also, since I'm also in the "setup.py should be able to specify
> minimum versions" camp (admittedly unlike others, such as Benji, to my
> continued surprise)

I agree with you on this point; it's quite useful for setup.py to be
able to specify such requirement constraints.


-Fred

--
Fred L. Drake, Jr. <fdrake at gmail.com>
"Chaos is the score upon which reality is written." --Henry Miller
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faassen at startifact

Sep 11, 2009, 8:58 AM

Post #17 of 18 (1211 views)
Permalink
Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

Fred Drake wrote:
> On Fri, Sep 11, 2009 at 8:53 AM, Martijn Faassen <faassen [at] startifact> wrote:
>> So, could you please follow this policy for ZTK packages in SVN?
>
> I suspect it would help if packages that are part of the ZTK have that
> indicated somewhere convenient, like near where the version number is
> specified in the setup.py file. Possibly with a link to the ZTK
> release policies.
>
> When making changes, we're often considering the relevant packages in
> isolation or in the context of our own applications, so a pointer to
> additional policies that apply is helpful.

That's a good idea.

The extreme version of this reminder would to mark it in a lot of places
in the package - in every python file and in setup.py near the version
and near the dependencies listing and every aspect that could possibly
be affected by ZTK policy. That is unworkable.

I figured a reference to the ZTK policies on the top of the setup.py
would be enough to remind people.

I've just committed these changes.

I've also taken the liberty to update the ZTK policy to say that this
should be done. (other steering group members can call me back if they
don't like this policy change :)

Regards,

Martijn

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faassen at startifact

Sep 11, 2009, 9:00 AM

Post #18 of 18 (1208 views)
Permalink
Re: [Checkins] SVN: zope.app.security/trunk/ keep trunk version at 0. Update changes [In reply to]

Benji York wrote:
> On Fri, Sep 11, 2009 at 10:41 AM, Martijn Faassen
> <faassen [at] startifact> wrote:
>> Benji York wrote:
>>> On Fri, Sep 11, 2009 at 8:53 AM, Martijn Faassen <faassen [at] startifact> wrote:
>>>> Well, the official policy of the ZTK is still to use the 'dev' approach.
>>>> We can't just suddenly start to use something else just like that,
>>>> without discussion.
>>> Absolutely. This is that discussion. :)
>> It's good we're having it now, but I'd much prefer to have one in advance.
>
> Alex's change was a simple mistake. He works with packages that use
> both styles. There wasn't any subversive intent.

Jim evidently has been doing it for a while too; there are a bunch of
packages changed. I understand no subversive intent was intended.

But this is also a good moment to reflect on how the policy ought to be
maintained, and how we can prevent this from happening too often.

Regards,

Martijn

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