Negative cache is confusing users

[wichert]

I just tried to install a new lingua release using pip, which failed. That turned out to be due to forgetting to actually upload the new release to PyPI. After fixing that I tried to install it again, but that still failed:

$ bin/pip install --verbose lingua==4.2
Collecting lingua==4.2
  Getting page https://pypi.python.org/simple/lingua/
  1 location(s) to search for versions of lingua:
  * https://pypi.python.org/simple/lingua/
  Getting page https://pypi.python.org/simple/lingua/
  Analyzing links from page https://pypi.python.org/simple/lingua/
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-2.2-py2-none-any.whl#md5=4f45a2fabc1ad404fb156ce25b4fc383 (from https://pypi.python.org/simple/lingua/), version: 2.2
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-2.3-py2-none-any.whl#md5=fbe774734fed4a2b96b83c46c8882314 (from https://pypi.python.org/simple/lingua/), version: 2.3
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-2.4-py2-none-any.whl#md5=d8467bda33cde948b303720458ad2196 (from https://pypi.python.org/simple/lingua/), version: 2.4
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-2.5-py2.py3-none-any.whl#md5=7a0876d338b6ab586a267e76380aabcf (from https://pypi.python.org/simple/lingua/), version: 2.5
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.0-py2.py3-none-any.whl#md5=e826a4e8c828be629f3c76539a0ffc32 (from https://pypi.python.org/simple/lingua/), version: 3.0
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.1-py2.py3-none-any.whl#md5=3781cb808a26bfaf4aefe2f170bb66cb (from https://pypi.python.org/simple/lingua/), version: 3.1
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.10-py2.py3-none-any.whl#md5=c0a8bd2f8ceac42dd4d1be2a615fb61f (from https://pypi.python.org/simple/lingua/), version: 3.10
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.11-py2.py3-none-any.whl#md5=8c7fd4ae96947f3ea506860221521453 (from https://pypi.python.org/simple/lingua/), version: 3.11
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.12-py2.py3-none-any.whl#md5=c1772ca8ef852af859801bcf4843f851 (from https://pypi.python.org/simple/lingua/), version: 3.12
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.2-py2.py3-none-any.whl#md5=86159f09fb6b79976862bfae3e2a42fb (from https://pypi.python.org/simple/lingua/), version: 3.2
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.5-py2.py3-none-any.whl#md5=23ddb544e3d11e82c710f9c6e68cb291 (from https://pypi.python.org/simple/lingua/), version: 3.5
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.5.1-py2.py3-none-any.whl#md5=0407aea926ced3ec9568f9d25779f6b3 (from https://pypi.python.org/simple/lingua/), version: 3.5.1
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.6-py2.py3-none-any.whl#md5=de168911fcb431710a4333d6cb3e26ae (from https://pypi.python.org/simple/lingua/), version: 3.6
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.6.1-py2.py3-none-any.whl#md5=016d05b593402875c0975fe1422ea52b (from https://pypi.python.org/simple/lingua/), version: 3.6.1
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.7-py2.py3-none-any.whl#md5=5cc2b5d260be4f20c2bf6154032e538d (from https://pypi.python.org/simple/lingua/), version: 3.7
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.8-py2.py3-none-any.whl#md5=4d1b66da8a87ee59b559c6e85a7355e1 (from https://pypi.python.org/simple/lingua/), version: 3.8
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-3.9-py2.py3-none-any.whl#md5=c1d55e4dc8c73191a39eef504d04a59e (from https://pypi.python.org/simple/lingua/), version: 3.9
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-4.0-py2.py3-none-any.whl#md5=6622af6b2d1abe09e40d785120c185da (from https://pypi.python.org/simple/lingua/), version: 4.0
    Found link https://pypi.python.org/packages/2.7/l/lingua/lingua-4.1-py2.py3-none-any.whl#md5=aeb18b84a6c5b0c1be4c2d5bb5901a3b (from https://pypi.python.org/simple/lingua/), version: 4.1
    Skipping link https://pypi.python.org/packages/3.4/l/lingua/lingua-2.2-py3-none-any.whl#md5=380719c7eb33a3d60a8bc0ed57789423 (from https://pypi.python.org/simple/lingua/); it is not compatible with this Python
    Skipping link https://pypi.python.org/packages/3.4/l/lingua/lingua-2.3-py3-none-any.whl#md5=f1123c1b5d0b1c09c7989c6b065c967f (from https://pypi.python.org/simple/lingua/); it is not compatible with this Python
    Skipping link https://pypi.python.org/packages/3.4/l/lingua/lingua-2.4-py3-none-any.whl#md5=5bf27db106f56dfa9e4c9e23cbfe1b56 (from https://pypi.python.org/simple/lingua/); it is not compatible with this Python
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-1.0.tar.gz#md5=f7b7c2e8b43576fb17a627604fdfa05a (from https://pypi.python.org/simple/lingua/), version: 1.0
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-1.0b1.tar.gz#md5=6630df3dc815c35853669044c2ed6202 (from https://pypi.python.org/simple/lingua/), version: 1.0b1
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-1.0b2.tar.gz#md5=bbae737131cc47c4fd11a7d417869af6 (from https://pypi.python.org/simple/lingua/), version: 1.0b2
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-1.0b3.tar.gz#md5=1a034bd45f8bbcf232010ac23abe8a52 (from https://pypi.python.org/simple/lingua/), version: 1.0b3
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-1.0b4.tar.gz#md5=693fa0b1e565d9ee27269b705064a762 (from https://pypi.python.org/simple/lingua/), version: 1.0b4
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-1.1.tar.gz#md5=9616ff0dcc5c66094528a8fda5b3be43 (from https://pypi.python.org/simple/lingua/), version: 1.1
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-1.2.tar.gz#md5=612fdbb63f356f4cf1da819416a4c163 (from https://pypi.python.org/simple/lingua/), version: 1.2
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-1.3.tar.gz#md5=08b60dcc10c5af6a00ca793baee589c4 (from https://pypi.python.org/simple/lingua/), version: 1.3
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-1.4.tar.gz#md5=14436a399754aabe637b84f294f27b64 (from https://pypi.python.org/simple/lingua/), version: 1.4
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-1.5.tar.gz#md5=e2918a93862af695ff721ecd7a09e2d0 (from https://pypi.python.org/simple/lingua/), version: 1.5
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-1.6.tar.gz#md5=bf13d25dd583a529d18ad5e98145e998 (from https://pypi.python.org/simple/lingua/), version: 1.6
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-2.0.tar.gz#md5=95b43b4122cc79970d7d73270b691457 (from https://pypi.python.org/simple/lingua/), version: 2.0
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-2.1.tar.gz#md5=518fec3e338d75bb7742803ea94a0aa3 (from https://pypi.python.org/simple/lingua/), version: 2.1
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-2.2.tar.gz#md5=75c6ac31821377035df7e88d72431c67 (from https://pypi.python.org/simple/lingua/), version: 2.2
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-2.3.tar.gz#md5=82f3d93db03431650f954a28594e7b8c (from https://pypi.python.org/simple/lingua/), version: 2.3
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-2.4.tar.gz#md5=7d4c86f4ba9a3fd187f5d404366e59aa (from https://pypi.python.org/simple/lingua/), version: 2.4
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-2.5.tar.gz#md5=bdd99a40aa80fdc1835b6adf8f6099b3 (from https://pypi.python.org/simple/lingua/), version: 2.5
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.0.tar.gz#md5=2b4cd13d2b6275347380245149482706 (from https://pypi.python.org/simple/lingua/), version: 3.0
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.1.tar.gz#md5=1c9c421513fd35191ac18d844de0f01e (from https://pypi.python.org/simple/lingua/), version: 3.1
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.10.tar.gz#md5=d8d2497b1c77efda36d784562dc35c20 (from https://pypi.python.org/simple/lingua/), version: 3.10
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.11.tar.gz#md5=9aa483cbe2ee211c8f748dbb49cadc90 (from https://pypi.python.org/simple/lingua/), version: 3.11
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.12.tar.gz#md5=b1783c3ca33a844f586d1d7ca2c10a15 (from https://pypi.python.org/simple/lingua/), version: 3.12
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.2.tar.gz#md5=f02c1b312def1239bf7cb2a9b27785e5 (from https://pypi.python.org/simple/lingua/), version: 3.2
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.3.tar.gz#md5=1ee721bbc745b074a79c5121d5791889 (from https://pypi.python.org/simple/lingua/), version: 3.3
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.4.tar.gz#md5=68e3378b55dc441ea7dcdf05a00fba3f (from https://pypi.python.org/simple/lingua/), version: 3.4
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.5.1.tar.gz#md5=f287f3e5881658aa9e3db51816489787 (from https://pypi.python.org/simple/lingua/), version: 3.5.1
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.5.tar.gz#md5=10cb0e67afe7830aa6a84f6ab35f300b (from https://pypi.python.org/simple/lingua/), version: 3.5
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.6.1.tar.gz#md5=a07e6da1e6e752a0ac95d31f6c66bfc6 (from https://pypi.python.org/simple/lingua/), version: 3.6.1
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.6.tar.gz#md5=70e9db2ec28f65ad501ad3ba6dd75667 (from https://pypi.python.org/simple/lingua/), version: 3.6
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.7.tar.gz#md5=e3a0fde65afc6de0d3c122acee9f47c4 (from https://pypi.python.org/simple/lingua/), version: 3.7
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.8.tar.gz#md5=082785bb902a5d2eef401ba326cc828e (from https://pypi.python.org/simple/lingua/), version: 3.8
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-3.9.tar.gz#md5=001f9e27b2968a30b5a092fbc315d750 (from https://pypi.python.org/simple/lingua/), version: 3.9
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-4.0.tar.gz#md5=371e5c39ea860e0bed1374e7e3e5866f (from https://pypi.python.org/simple/lingua/), version: 4.0
    Found link https://pypi.python.org/packages/source/l/lingua/lingua-4.1.tar.gz#md5=7d78db4bc92f1ff21fded2e6eba6c44c (from https://pypi.python.org/simple/lingua/), version: 4.1
  Could not find a version that satisfies the requirement lingua==4.2 (from versions: 1.0b1, 1.0b2, 1.0b3, 1.0b4, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.5.1, 3.6, 3.6.1, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12, 4.0, 4.1)
Cleaning up...
No matching distribution found for lingua==4.2
Exception information:
Traceback (most recent call last):
  File "/Users/wichert/CurveTips/fullint/app/lib/python2.7/site-packages/pip/basecommand.py", line 211, in main
    status = self.run(options, args)
  File "/Users/wichert/CurveTips/fullint/app/lib/python2.7/site-packages/pip/commands/install.py", line 305, in run
    wb.build(autobuilding=True)
  File "/Users/wichert/CurveTips/fullint/app/lib/python2.7/site-packages/pip/wheel.py", line 705, in build
    self.requirement_set.prepare_files(self.finder)
  File "/Users/wichert/CurveTips/fullint/app/lib/python2.7/site-packages/pip/req/req_set.py", line 334, in prepare_files
    functools.partial(self._prepare_file, finder))
  File "/Users/wichert/CurveTips/fullint/app/lib/python2.7/site-packages/pip/req/req_set.py", line 321, in _walk_req_to_install
    more_reqs = handler(req_to_install)
  File "/Users/wichert/CurveTips/fullint/app/lib/python2.7/site-packages/pip/req/req_set.py", line 461, in _prepare_file
    req_to_install.populate_link(finder, self.upgrade)
  File "/Users/wichert/CurveTips/fullint/app/lib/python2.7/site-packages/pip/req/req_install.py", line 250, in populate_link
    self.link = finder.find_requirement(self, upgrade)
  File "/Users/wichert/CurveTips/fullint/app/lib/python2.7/site-packages/pip/index.py", line 571, in find_requirement
    'No matching distribution found for %s' % req
DistributionNotFound: No matching distribution found for lingua==4.2

Retrying the exact same thing with caching disabled worked fine:

$ bin/pip install --no-cache-dir lingua==4.2
Collecting lingua==4.2
  Downloading lingua-4.2-py2.py3-none-any.whl
Requirement already satisfied (use --upgrade to upgrade): polib in ./lib/python2.7/site-packages (from lingua==4.2)
Requirement already satisfied (use --upgrade to upgrade): setuptools in ./lib/python2.7/site-packages (from lingua==4.2)
Requirement already satisfied (use --upgrade to upgrade): Chameleon in ./lib/python2.7/site-packages (from lingua==4.2)
Installing collected packages: lingua
  Found existing installation: lingua 4.1
    Uninstalling lingua-4.1:
      Successfully uninstalled lingua-4.1
Successfully installed lingua-4.2

[xavfernandez]

Hello, thanks for your report.

However it is a known issue already reported in #2901 and #2906 so I'm closing this one.