Specific egg versions are ignored when newer eggs are around

[Christian Theune]

Buildout might ignore a specific egg requirement for a recipe:

- Have a newer version of an egg in your eggs directory
- Use 'recipe==olderversion' in your buildout.cfg to request an older version

Buildout will go and fetch the older version, but it will *use* the newer version when installing a part with this recipe.

[Jim Fulton (jim-zope)]

I can't reproduce this.

The following test passes for me:

    Buildout might ignore a specific egg requirement for a recipe:

    - Have a newer version of an egg in your eggs directory
    - Use 'recipe==olderversion' in your buildout.cfg to request an
      older version

    Buildout will go and fetch the older version, but it will *use*
    the newer version when installing a part with this recipe.

    >>> write('buildout.cfg',
    ... '''
    ... [buildout]
    ... parts = x
    ... find-links = %(sample_eggs)s
    ...
    ... [x]
    ... recipe = zc.recipe.egg
    ... eggs = demo
    ... ''' % globals())

    >>> print system(buildout),
    buildout: Installing x
    zc.buildout.easy_install: Getting new distribution for demo
    zc.buildout.easy_install: Got demo 0.3
    zc.buildout.easy_install: Getting new distribution for demoneeded
    zc.buildout.easy_install: Got demoneeded 1.1

    >>> print system(join('bin', 'demo')),
    3 1

    >>> write('buildout.cfg',
    ... '''
    ... [buildout]
    ... parts = x
    ... find-links = %(sample_eggs)s
    ...
    ... [x]
    ... recipe = zc.recipe.egg
    ... eggs = demo ==0.1
    ... ''' % globals())

    >>> print system(buildout),
    buildout: Uninstalling x
    buildout: Installing x
    zc.buildout.easy_install: Getting new distribution for demo==0.1
    zc.buildout.easy_install: Got demo 0.1

    >>> print system(join('bin', 'demo')),
    1 1

[Christian Theune (ctheune)]

And I can't reproduce it anymore either. :/ Rejecting my own bug.