#21050 Install failed for pants plugin Issue created by kaos Describe the bug Well this was annoying.

ERROR: Cannot install acme-pants-plugin==2.15.0.dev8+2.21.0 because these package versions have conflicting dependencies.
ERROR: ResolutionImpossible: for help visit <https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts>

 The conflict is caused by:
     acme-pants-plugin 2.15.0.dev8+2.21.0 depends on pantsbuild.pants==2.21.0
     The user requested (constraint) pantsbuild-pants==2.21.0

 To fix this you could try to:
 1. loosen the range of package versions you've specified
 2. remove package versions to allow pip attempt to solve the dependency conflict

Pants version 2.21.0 OS Mac. Additional info Took me a second to spot the difference.. (

.

vs

-

.)

[GLOBAL]
pants_version = "2.21.0"
plugins = ["acme-pants-plugin==2.15.0.dev8+2.21.0"]

❯ cat acme_pants_plugin-0.0.0.dist-info/METADATA
Metadata-Version: 2.1
Name: acme-pants-plugin
Version: 0.0.0
Requires-Python: ==3.9.*
Requires-Dist: click
Requires-Dist: pantsbuild.pants (==2.21.0)

The

pants_requirements()

BUILD file target results in a dependency on `pantsbuild.pants`:

❯ pants peek 3rdparty:pantsbuild
[
  {
    "address": "3rdparty:pantsbuild",
    "target_type": "pants_requirements",
    "_find_links": [],
    "dependencies": [
      "3rdparty:pantsbuild#pantsbuild.pants",
      "3rdparty:pantsbuild#pantsbuild.pants.testutil"
    ],
    "description": null,
    "tags": null,
    "testutil": true,
    "version_spec": "== 2.21.0"
  }
]

The constraints passed to PEX/pip also lists

pantsbuild.pants

, so this seems it could be a dist name normalization applied by PEX/pip. This normalization seems to contradict https://peps.python.org/pep-0503/#normalized-names Edit: The names and versions are ~irrelevant. What matters is that the pantsbuild distro is not available on PyPI since 2.18.0, and scie-pants doesn't provide the find-links option to locate them in the custom wheel shop for plugins to consume. pantsbuild/pants