If an exact version is specified for install, and that version is
already installed, then there is no point going to pypi as no install
is needed.
Adds a test called
`test_upgrade_no_look_at_pypi_if_exact_version_installed`.
This is a rework of PR #771, because that PR is old and has merge
conflicts that were easier to fix by applying the changes manually.
Without this, I was getting:
$ pip install -U 'sentry[lol]'
...
UnknownExtra: Unknown 7.4.1 has no such extra feature 'lol'
With this, I get:
$ pip install -U 'sentry[lol]'
...
UnknownExtra: sentry 7.4.1 has no such extra feature 'lol'
use pkg_resources.Distribution.requires instead of
Requirements.requirements to have environment markers parsing for free
It also unifies a little the process for wheel and non-wheel installs
closes#2174
It's now possible to specify requirements markers in requirements.
Examples::
futures; python_version < '2.7'
mock; python_version < '3.3'
nose
ordereddict; python_version < '2.7'
unittest2; python_version < '2.7'
The separator is "; ". For convinience, ";" alone is also supported, but
no in URLs. The ";" character is a legit and common character in an URL.
Example of valid URL without markers::
http://foo.com/?p=bar.git;a=snapshot;h=v0.1;sf=tgz
Example of URL with markers::
http://foo.com/?p=bar.git;a=snapshot;h=v0.1;sf=tgz; python_version < '3.3'
Default from pip 1.6 will be to always use wheels, so the --use-wheels
in requirements.txt is now deprecated. However, the --no-use-wheels
is introduced to be able to disable wheel usage via requirements.txt.
* Deprecates the --download-cache option & removes the download
cache code.
* Removes the in memory page cache on the index
* Uses CacheControl to cache all cacheable HTTP requests to the
filesystem.
* Properly handles CacheControl headers for unconditional
caching.
* Will use ETag and Last-Modified headers to attempt to do a
conditional HTTP request to speed up cache misses and turn
them into cache hits.
* Removes some concurrency unsafe code in the download cache
accesses.
* Uses a Cache-Control request header to limit the maximum
length of time a cache is valid for.
* Adds pip.appdirs to handle platform specific application
directories such as cache, config, data, etc.
Conflicts:
CHANGES.txt
tests/functional/test_install_reqs.py
tests/lib/__init__.py
tests/unit/test_req.py
Additional work - refactored tests to new style.
* Better output with the bare asserts we use throughout the tests
* Function fixtures are pretty nice, especially as a way to
start a background server or create an isolated virtualenv
