Dependency names retain the "tap prefix", e.g. the "homebrew/dupes"
part of "homebrew/dupes/zlib". However formula objects do not, and this
is desired because we do not record the tap name as part of the
installation prefix.
So we need to ensure the correct dep names are passed to superenv,
otherwise it will not add the correct directories to various environment
variables.
This allows formulae which won't build with Tiger's ld to conditionally
request a dependency on the ld64 formula. This modifies the build
environment appropriately, and will only be active on Tiger.
When expanding dependencies, repeated deps are treated as equal and all
but the first are discarded when #uniq is called on the resulting array.
However, they may have different sets of options attached, so we cannot
assume they are the same.
After the initial expansion, we group them by name and then create a new
Dependency object for each name, merging the options from each group.
FixesHomebrew/homebrew#20335.
Strip `?` and trailing characters from URL extensions and basenames.
This makes some install methods cleaner, and prevents staging of files
with `?` in the name, as that is a weird character.
Affects 2 formulae in core (though potentially externals will need to be fixed.)
Authors should use `python.standard_caveats` instead.
* Accessor for python.binary
* Made `python.brewed?` more robust if no python found at all
* python.brewed? is more relaxed now and allows older versions
of the Python formula.
* Only print about wrining sitecustomize.py and distutils.cfg if
verbose and debug.
ScriptFileFormula's use is that it installs whatever was downloaded
to bin; if the install is overridden, there's no benefit over deriving
directly from Formula.
* The python do ... end block does no longer
require 'superenv' but saves and restores
the ENV by using ENV.to_hash and `ensure`.
This should resolve some build problems
with formulae using `env :std`!
* `python_helper` is now in a module `Python`.
* Imporoved some comments in python_dependency.rb
