symlink to requirements file not being generated.

[sambatyon]

We introduced the rules pip in our system a few weeks back, then we started having certain issues, the output error is the following (slightly edited):

INFO: Call stack for the definition of repository 'pypi__3__cython_0_29_13' which is a whl_library (rule definition at /home/ubuntu/.cache/bazel-cache/<custom-output-path>/external/com_github_ali5h_rules_pip/defs.bzl:97:15):
 - /home/ubuntu/.cache/bazel-cache/<custom-output-path>/external/subsystem_import/requirements.bzl:8:5
 - /home/ubuntu/.cache/src/WORKSPACE:308:1
ERROR: An error occurred during the fetch of repository 'pypi__3__cython_0_29_13':
   Not a regular file: /home/ubuntu/.cache/bazel-cache/<custom-output-path>/external/subsystem_import/requirements.txt
ERROR: /home/ubuntu/.cache/src/path/to/target/BUILD:12:1: //path/to/target:python_tool depends on @pypi__3__cython_0_29_13//:pkg in repository @pypi__3__cython_0_29_13 which failed to fetch. no such package '@pypi__3__cython_0_29_13//': Not a regular file: /home/ubuntu/.cache/bazel-cache/<custom-output-path>/external/subsystem_import/requirements.txt
ERROR: Analysis of target '//path/to/target:python_tool' failed; build aborted: no such package '@pypi__3__cython_0_29_13//': Not a regular file: /home/ubuntu/.cache/bazel-cache/<custom-output-path>/external/subsystem_import/requirements.txt

Checking the directory /home/ubuntu/.cache/bazel-cache/<custom-output-path>/external/subsystem_import/ we only have the following files:

BUILD
WORKSPACE
requirements.bzl

Our WORKSPACE looks something like this:

pip_import(
    name = "subsystem_imports",
    python_version = "3",
    requirements = "//path/to/target:requirements.txt",
)

load("@subsystem_imports//:requirements.bzl", subsystem_pip_install = "pip_install")

subsystem_pip_install()

[ali5h]

would u try no-symlink branch (https://github.com/ali5h/rules_pip/tree/no-symlink)

[sambatyon]

I will close this, apparently we had a cleanup script which deleted some symlinks it shouldn't