[Scons-users] Should PseudoBuilder's get access to OverrideEnvironment values if called via one

[Andrew C. Morrow]

Did an issue ever get filed for this? I took a quick look in the issue
tracker and didn't see anything that was obviously this.

Thanks,
Andrew


On Fri, Apr 26, 2019 at 10:35 AM Gary Oberbrunner <garyo at oberbrunner.com>
wrote:

> Not much, but they've been there since olden days. Check 1be774d48 from
> Sept 2001:
>
> diff --git a/src/scons/Environment.py b/src/scons/Environment.py
> index da71ba1..9b050d1 100644
> --- a/src/scons/Environment.py
> +++ b/src/scons/Environment.py
> @@ -62,8 +62,25 @@ class Environment:
>             import scons.Defaults
>             kw['BUILDERS'] = scons.Defaults.Builders[:]
>         self.Dictionary.update(copy.deepcopy(kw))
> +
> +       class BuilderWrapper:
> +           """Wrapper class that allows an environment to
> +           be associated with a Builder at instantiation.
> +           """
> +           def __init__(self, env, builder):
> +               self.env = env
> +               self.builder = builder
> +
> +           def __call__(self, target = None, source = None):
> +               return self.builder(self.env, target, source)
> +
> +           def execute(self, **kw):
> +               apply(self.builder.execute, (), kw)
> +
> ...
>
> On Fri, Apr 26, 2019 at 10:25 AM Bill Deegan <bill at baddogconsulting.com>
> wrote:
>
>> I'll go ahead and file a bug.
>> Do you know any of the history of
>>
>> MethodWrapper/BuilderWrapper
>>
>> -Bill
>>
>> On Fri, Apr 26, 2019 at 10:21 AM Gary Oberbrunner <garyo at oberbrunner.com>
>> wrote:
>>
>>> I agree with you -- it definitely should get the env it's called from no
>>> matter if it's an OverrideEnvironment or a normal one.
>>>
>>> On Thu, Apr 25, 2019 at 10:14 PM Bill Deegan <bill at baddogconsulting.com>
>>> wrote:
>>>
>>>> Indeed it shoud.
>>>> repo updated.
>>>> Here's fixed example:
>>>>
>>>> from SCons.Environment import OverrideEnvironment
>>>>
>>>> DefaultEnvironment(tools=[])
>>>> env=Environment(BIN='mybin',LOCALBIN='localbin')
>>>>
>>>> def install_in_bin_dirs(env, source):
>>>> """Install source in both bin dirs"""
>>>> i1 = env.Install("$BIN", source)
>>>> i2 = env.Install("$LOCALBIN", source)
>>>> print("TEST_VAR=%s"%env['TEST_VAR'])
>>>> return [i1[0], i2[0]] # Return a list, like a normal builder
>>>>
>>>> env.AddMethod(install_in_bin_dirs, "InstallInBinDirs")
>>>>
>>>> oenv=OverrideEnvironment(env,TEST_VAR='abc')
>>>>
>>>> oenv.InstallInBinDirs(env.Program('main.c')) # installs hello in both
>>>> bin dirs
>>>>
>>>> print("Override id:%s"%id(oenv))
>>>>
>>>>
>>>>
>>>> And output:
>>>> $ python ~/devel/scons/git/as_scons/src/script/scons.py --debug=explain
>>>> scons: Reading SConscript files ...
>>>> TypeError: __init__() got an unexpected keyword argument 'TEST_VAR':
>>>>   File
>>>> "/Users/bdbaddog/devel/scons/bugs/Scons-psuedobuilder_no_override_access/SConstruct",
>>>> line 15:
>>>>     oenv=OverrideEnvironment(env,TEST_VAR='abc')
>>>>
>>>>
>>>>
>>>> On Thu, Apr 25, 2019 at 6:39 PM Gary Oberbrunner <garyo at oberbrunner.com>
>>>> wrote:
>>>>
>>>>> Sorry, I have a cold.
>>>>>  Still: oenv.InstallInBinDirs(...) ?
>>>>>
>>>>> --Gary
>>>>>
>>>>> On Thu, Apr 25, 2019, 6:37 PM Gary Oberbrunner <garyo at oberbrunner.com>
>>>>> wrote:
>>>>>
>>>>>> Shouldn't that say oenv.install_in_bin_dir(...)?
>>>>>>
>>>>>> --Gary
>>>>>>
>>>>>> On Thu, Apr 25, 2019, 6:06 PM Bill Deegan <bill at baddogconsulting.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Currently they don't
>>>>>>>
>>>>>>> See sample git repo:
>>>>>>>
>>>>>>> https://github.com/bdbaddog/Scons-psuedobuilder_no_override_access/tree/master
>>>>>>>
>>>>>>> SConstruct:
>>>>>>>
>>>>>>> DefaultEnvironment(tools=[])
>>>>>>> env=Environment(BIN='mybin',LOCALBIN='localbin')
>>>>>>>
>>>>>>> def install_in_bin_dirs(env, source):
>>>>>>>     """Install source in both bin dirs"""
>>>>>>>     i1 = env.Install("$BIN", source)
>>>>>>>     i2 = env.Install("$LOCALBIN", source)
>>>>>>>     print("TEST_VAR=%s"%env['TEST_VAR'])
>>>>>>>     return [i1[0], i2[0]] # Return a list, like a normal builder
>>>>>>>
>>>>>>> env.AddMethod(install_in_bin_dirs, "InstallInBinDirs")
>>>>>>>
>>>>>>> env.InstallInBinDirs(env.Program('main.c')) # installs hello in both bin dirs
>>>>>>>
>>>>>>> oenv=OverrideEnvironment(env,TEST_VAR='abc')
>>>>>>> print("Override id:%s"%id(oenv))
>>>>>>>
>>>>>>>
>>>>>>> Yields:
>>>>>>> $ python ~/devel/scons/git/as_scons/src/script/scons.py
>>>>>>> scons: Reading SConscript files ...
>>>>>>> KeyError: 'TEST_VAR':
>>>>>>>   File "/Users/bdbaddog/devel/scons/bugs/Scons-psuedobuilder_no_override_access/SConstruct", line 13:
>>>>>>>     env.InstallInBinDirs(env.Program('main.c')) # installs hello in both bin dirs
>>>>>>>   File "/Users/bdbaddog/devel/scons/git/as_scons/src/script/../engine/SCons/Environment.py", line 224:
>>>>>>>     return self.method(*nargs, **kwargs)
>>>>>>>   File "/Users/bdbaddog/devel/scons/bugs/Scons-psuedobuilder_no_override_access/SConstruct", line 8:
>>>>>>>     print("TEST_VAR=%s"%env['TEST_VAR'])
>>>>>>>   File "/Users/bdbaddog/devel/scons/git/as_scons/src/script/../engine/SCons/Environment.py", line 410:
>>>>>>>     return self._dict[key]
>>>>>>>
>>>>>>> This is because PsuedoBuilder's are wrapped with the Environment() they are added to.
>>>>>>>
>>>>>>> Via MethodWrapper()
>>>>>>>
>>>>>>> Which caused a couple hours of debugging to find today..
>>>>>>>
>>>>>>> Unless someone can propose a reasonable reason it shouldn't I'll file a github issue.
>>>>>>>
>>>>>>> -Bill
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Scons-users mailing list
>>>>>>> Scons-users at scons.org
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>>>>>>>
>>>>>> _______________________________________________
>>>>> Scons-users mailing list
>>>>> Scons-users at scons.org
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>>>>>
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>>>
>>>
>>> --
>>> Gary
>>> _______________________________________________
>>> Scons-users mailing list
>>> Scons-users at scons.org
>>> https://pairlist4.pair.net/mailman/listinfo/scons-users
>>>
>> _______________________________________________
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>>
>
>
> --
> Gary
> _______________________________________________
> Scons-users mailing list
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