1957516 - ./mach ide fails due to a missing `gyp` dependency when reticulating splines

Status: RESOLVED DUPLICATE of bug 1956317

(Developer Infrastructure :: Developer Environment Integration, defect)

Description

[Nico Grunbaum [:ng, @chew:mozilla.org]]

When running ./mach ide vscode locally, reticulating splines fails as follows:

0:10.28 /Users/ng/.mozbuild/srcdirs/mozilla-unified-7bb6bf654f5a/_virtualenvs/ide/bin/python /Users/ng/dev/mozilla-unified/obj-aarch64-apple-darwin24.3.0/config.status --backend=Clangd
Reticulating splines...
Traceback (most recent call last):
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/reader.py", line 1124, in read_mozbuild
    for s in self._read_mozbuild(
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/reader.py", line 1229, in _read_mozbuild
    from .gyp_reader import GypProcessor
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/gyp_reader.py", line 10, in <module>
    import gyp
ModuleNotFoundError: No module named 'gyp'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/ng/dev/mozilla-unified/obj-aarch64-apple-darwin24.3.0/config.status", line 770, in <module>
    config_status(**args)
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/config_status.py", line 208, in config_status
    backend.consume(definitions)
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/backend/base.py", line 120, in consume
    for obj in objs:
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/emitter.py", line 145, in emit
    for out in output:
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/reader.py", line 906, in read_topsrcdir
    for r in self.read_mozbuild(path, self.config):
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/reader.py", line 1130, in read_mozbuild
    raise bre
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/reader.py", line 1124, in read_mozbuild
    for s in self._read_mozbuild(
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/reader.py", line 1302, in _read_mozbuild
    for res in self.read_mozbuild(
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/reader.py", line 1153, in read_mozbuild
    raise BuildReaderError(
mozbuild.frontend.reader.BuildReaderError:
==============================
FATAL ERROR PROCESSING MOZBUILD FILE
==============================

The error occurred while processing the following file:

    /Users/ng/dev/mozilla-unified/security/moz.build

The error appears to be part of the mozbuild.frontend.reader Python module itself! It is possible you have stumbled across a legitimate bug.

Traceback (most recent call last):
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/reader.py", line 1124, in read_mozbuild
    for s in self._read_mozbuild(
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/reader.py", line 1229, in _read_mozbuild
    from .gyp_reader import GypProcessor
  File "/Users/ng/dev/mozilla-unified/python/mozbuild/mozbuild/frontend/gyp_reader.py", line 10, in <module>
    import gyp
ModuleNotFoundError: No module named 'gyp'

As a work around I ran the following to install the dependency into the virtualenv.
./mach python --virtualenv ide -- -m pip install -e third_party/python/gyp

Comment 1

[Andreas Pehrson [:pehrsons]]

I get the same on macOS. Per hg bisect this was caused by bug 1941759.