build: use bin path override if no python is found in PATH #16241

bradleythughes · 2017-10-16T20:41:14Z

On systems with no "python" in the PATH, e.g. when building with poudriere on FreeBSD, we should always create a python symlink in get_bin_override(). Otherwise, configure fails with the following error:

Traceback (most recent call last):
  File "./configure", line 1461, in <module>
    bin_override = get_bin_override()
  File "./configure", line 1360, in get_bin_override
    if os.path.realpath(which('python')) == os.path.realpath(sys.executable):
  File "/usr/local/lib/python2.7/posixpath.py", line 375, in realpath
    path, ok = _joinrealpath('', filename, {})
  File "/usr/local/lib/python2.7/posixpath.py", line 381, in _joinrealpath
    if isabs(rest):
  File "/usr/local/lib/python2.7/posixpath.py", line 54, in isabs
    return s.startswith('/')
AttributeError: 'NoneType' object has no attribute 'startswith'

Checklist

make -j4 test (UNIX), or vcbuild test (Windows) passes
commit message follows commit guidelines

Affected core subsystem(s)

build

bradleythughes · 2017-10-16T20:44:31Z

This happens with the recently released v8.7.0 as well, so if it's possible to land this on v8.x, I'd be very appreciative. :)

gibfahn · 2017-10-16T21:06:00Z

Wow, never occurred to me that there were systems/configurations without a python defined.

cc/ @forivall @addaleax @bengl @bnoordhuis @nodejs/python , PTAL

gireeshpunathil · 2017-10-17T05:09:58Z

I am sorry, but not sure I understand - On systems with no "python" in the PATH , the stack trace that you listed is not possible right? as that trace itself is a python manifestation?

forivall · 2017-10-17T05:22:12Z

I'm guessing that it means systems where there's a python2 and maybe python3 but no python, or that python is just installed somewhere not on the path.

bradleythughes · 2017-10-17T05:34:29Z

That's correct. There is python2.7 and python2 in the path, but no python.

gireeshpunathil · 2017-10-17T05:56:53Z

thanks @forivall and @bradleythughes. Can you also please have a look at #16058 and #14737 and see that this is supplementing / complimenting to those? I am also trying to relate these.

bradleythughes · 2017-10-17T06:26:25Z

@gireeshpunathil Yes, I found both of those PRs when I hit the configure error shown above with the v8.7.0 release. This PR addresses a specific situation not covered by the other two, so yes, I would say this PR is both complimentary and supplementary. 🙂

bnoordhuis

LGTM modulo style nit.

configure

thefourtheye

LGTM with @bnoordhuis's comment.

On systems with no "python" in the PATH, e.g. FreeBSD, we should always create a python symlink in get_bin_override(). Otherwise, configure fails with the following error: Traceback (most recent call last): File "./configure", line 1461, in <module> bin_override = get_bin_override() File "./configure", line 1360, in get_bin_override if os.path.realpath(which('python')) == os.path.realpath(sys.executable): File "/usr/local/lib/python2.7/posixpath.py", line 375, in realpath path, ok = _joinrealpath('', filename, {}) File "/usr/local/lib/python2.7/posixpath.py", line 381, in _joinrealpath if isabs(rest): File "/usr/local/lib/python2.7/posixpath.py", line 54, in isabs return s.startswith('/') AttributeError: 'NoneType' object has no attribute 'startswith'

gireeshpunathil · 2017-10-18T05:51:26Z

CI: https://ci.nodejs.org/job/node-test-pull-request/10805/

gireeshpunathil · 2017-10-22T05:44:09Z

More CI failures than I can comprehend, running it once again:
CI: https://ci.nodejs.org/job/node-test-pull-request/10897/

refack · 2017-10-22T18:47:55Z

Landed in 02a5267

Thanks!

On systems with no "python" in the PATH, e.g. FreeBSD, we should always create a python symlink in get_bin_override(). PR-URL: #16241 Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com>

On systems with no "python" in the PATH, e.g. FreeBSD, we should always create a python symlink in get_bin_override(). PR-URL: nodejs/node#16241 Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com>

MylesBorins · 2017-11-14T20:36:00Z

can we get a backport to v6.x?

refack · 2017-11-14T20:37:03Z

Backporting now.

MylesBorins · 2017-11-14T20:37:37Z

@refack NVM... lands cleanly with #16058

On systems with no "python" in the PATH, e.g. FreeBSD, we should always create a python symlink in get_bin_override(). PR-URL: #16241 Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com>

On systems with no "python" in the PATH, e.g. FreeBSD, we should always create a python symlink in get_bin_override(). PR-URL: nodejs/node#16241 Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com> Reviewed-By: Refael Ackermann <refack@gmail.com>

nodejs-github-bot added the build Issues and PRs related to build files or the CI. label Oct 16, 2017

gibfahn approved these changes Oct 16, 2017

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gibfahn mentioned this pull request Oct 16, 2017

build: allow build with system python 3 #16058

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gireeshpunathil approved these changes Oct 17, 2017

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thefourtheye approved these changes Oct 17, 2017

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bradleythughes force-pushed the build-use-bin-override-if-no-python branch from b165063 to 0f1872c Compare October 17, 2017 19:47

refack approved these changes Oct 22, 2017

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refack closed this Oct 22, 2017

MylesBorins added the backport-requested-v6.x label Nov 14, 2017

refack self-assigned this Nov 14, 2017

MylesBorins added land-on-v6.x and removed backport-requested-v6.x labels Nov 14, 2017

refack removed their assignment Nov 14, 2017

MylesBorins mentioned this pull request Nov 21, 2017

v6.12.1 proposal #17180

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bradleythughes deleted the build-use-bin-override-if-no-python branch September 30, 2020 21:13

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build: use bin path override if no python is found in PATH #16241

build: use bin path override if no python is found in PATH #16241

bradleythughes commented Oct 16, 2017

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gibfahn commented Oct 16, 2017 •

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refack commented Nov 14, 2017

MylesBorins commented Nov 14, 2017

build: use bin path override if no python is found in PATH #16241

build: use bin path override if no python is found in PATH #16241

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bradleythughes commented Oct 16, 2017

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