REPL invocation fails with "path is not normalized" #3101
Description
🐞 bug report
Affected Rule
The issue is caused by the rule: @rules_python//python/bin:repl
Is this a regression?
Not strictly speaking. I do not believe the REPL feature was available prior to 1.5.0. While I've been able to reproduce this issue with both 1.5.0 and 1.5.1, I recall using the REPL feature successfully with a clone of rules_python before the 1.5.0 release.
Description
When running the example command-line from https://github.com/bazel-contrib/rules_python/blob/main/docs/repl.md I get a an error saying "path is not normalized" and the Python shell is not started.
$ bazel run @rules_python//python/bin:repl --@rules_python//python/bin:repl_dep=@rules_python//tools:wheelmaker🔬 Minimal Reproduction
I ran the above command-line inside a brand new and empty Bazel module with these MODULE.bazel contents:
module(name="test", version="0.1.0")
bazel_dep(name="rules_python", version="1.5.1")🔥 Exception or Error
Starting local Bazel server (8.3.1) and connecting to it...
INFO: Analyzed target @@rules_python+//python/bin:repl (82 packages loaded, 3620 targets configured).
INFO: Found 1 target...
Target @@rules_python+//python/bin:repl up-to-date:
bazel-bin/external/rules_python+/python/bin/repl
bazel-bin/external/rules_python+/python/bin/repl_py.py
INFO: Elapsed time: 11.545s, Critical Path: 0.89s
INFO: 6 processes: 1 action cache hit, 6 internal.
INFO: Build completed successfully, 6 total actions
INFO: Running command line: bazel-bin/external/rules_python+/python/bin/repl
Python 3.11.13 (main, Jun 9 2025, 18:12:55) [Clang 20.1.4 ] on linux
Type "help", "copyright", "credits" or "license" for more information.
Traceback (most recent call last):
File "/home/jpwoodbu/.cache/bazel/_bazel_jpwoodbu/4f83e7249d0fd942371631f62dae1282/execroot/_main/bazel-out/k8-fastbuild/bin/external/rules_python+/python/bin/repl.runfiles/rules_python+/python/bin/repl_py.py", line 45, in
start_repl()
File "/home/jpwoodbu/.cache/bazel/_bazel_jpwoodbu/4f83e7249d0fd942371631f62dae1282/execroot/_main/bazel-out/k8-fastbuild/bin/external/rules_python+/python/bin/repl.runfiles/rules_python+/python/bin/repl_py.py", line 38, in start_repl
bazel_runfiles.Rlocation(STUB_PATH),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/jpwoodbu/.cache/bazel/_bazel_jpwoodbu/4f83e7249d0fd942371631f62dae1282/execroot/_main/bazel-out/k8-fastbuild/bin/external/rules_python+/python/bin/repl.runfiles/rules_python+/python/runfiles/runfiles.py", line 176, in Rlocation
raise ValueError('path is not normalized: "%s"' % path)
ValueError: path is not normalized: "rules_python+/../rules_python+/python/bin/repl_stub.py"
🌍 Your Environment
Operating System:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.5 LTS
Release: 22.04
Codename: jammy
Reproduced on a second machine...
$ lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 12 (bookworm)
Release: 12
Codename: bookworm
Output of bazel version:
$ bazel version
Bazelisk version: v1.20.0
Build label: 8.3.1
Build target: @@//src/main/java/com/google/devtools/build/lib/bazel:BazelServer
Build time: Mon Jun 30 16:23:40 2025 (1751300620)
Build timestamp: 1751300620
Build timestamp as int: 1751300620
Rules_python version:
1.5.1
Anything else relevant?
I don't think so.