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Re: guix import error + New: setting up a jupyterlab environment


From: Zelphir Kaltstahl
Subject: Re: guix import error + New: setting up a jupyterlab environment
Date: Mon, 19 Oct 2020 23:12:35 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0

Meanwhile I have managed to run the jupyterlab-server tests, as
described in more details here:
https://github.com/jupyterlab/jupyterlab_server/issues/128

Indeed, in version 1.2.0 the tests fail the same way they fail when I
try to create my environment. This means the next thing to fix would
probably be to use another version of jupyterlab-server. 1.2.0 is a tag
in the jupyterlab-server repository, which _seems_ to be the latest
"stable" version, before a lot of alpha, beta, and release-candidate
versions follow.

I guess I could switch the commit in my `jupyterlab.scm` file to point
to a different one?

I can change the version to `2.0.0rc1`, but I do not know how the
checksum is calculated. The checksum is shorter than what I see on
simply PyPI:

https://files.pythonhosted.org/packages/79/43/5249be5ee741a93f3fa60823caf9a276cadc3103dae16d6e36cc534fefd8/jupyterlab_server-2.0.0rc1.tar.gz#sha256=733b149c5ab8e50ea5f2897c323047257060e7bf2dc0fa88663181427bec605d

and base32 should only make it longer, not shorter.

Can you explain how to switch a version manually and calculate the
checksum to match another version?

Regards,
Zelphir

On 10/19/20 8:19 PM, Zelphir Kaltstahl wrote:
>
> Hello Efraim,
>
> Thanks for your patience! It seems with that I am getting quite far
> (at least it feels like making progress, or even being close to have a
> working environment), up to the "check phase". There some tests
> failing in the "check phase". Here is what I am getting now,
> regardless of whether I stick ("python-ipykernel" ,python-ipykernel)
> in the native inputs or propagated inputs:
>
> ~~~~START~~~~
> running install_egg_info
> Copying jupyterlab_server.egg-info to 
> /gnu/store/2h44ldpcqqd0q7hqpbcqdavcnbjsibfb-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server-1.2.0-py3.8.egg-info
> running install_scripts
> phase `install' succeeded after 0.3 seconds
> starting phase `wrap'
> find-files: 
> /gnu/store/2h44ldpcqqd0q7hqpbcqdavcnbjsibfb-python-jupyterlab-server-1.2.0/bin:
>  No such file or directory
> find-files: 
> /gnu/store/2h44ldpcqqd0q7hqpbcqdavcnbjsibfb-python-jupyterlab-server-1.2.0/sbin:
>  No such file or directory
> phase `wrap' succeeded after 0.0 seconds
> starting phase `check'
> running "python setup.py" with command "test" and parameters ()
> running test
> running egg_info
> writing jupyterlab_server.egg-info/PKG-INFO
> writing dependency_links to jupyterlab_server.egg-info/dependency_links.txt
> writing requirements to jupyterlab_server.egg-info/requires.txt
> writing top-level names to jupyterlab_server.egg-info/top_level.txt
> reading manifest file 'jupyterlab_server.egg-info/SOURCES.txt'
> reading manifest template 'MANIFEST.in'
> warning: no previously-included files matching '*~' found anywhere in 
> distribution
> warning: no previously-included files matching '*.pyc' found anywhere in 
> distribution
> warning: no previously-included files matching '*.pyo' found anywhere in 
> distribution
> warning: no previously-included files matching '.git' found anywhere in 
> distribution
> warning: no previously-included files matching '.ipynb_checkpoints' found 
> anywhere in distribution
> writing manifest file 'jupyterlab_server.egg-info/SOURCES.txt'
> running build_ext
> test_get (jupyterlab_server.tests.test_settings_api.SettingsAPITest) ... ERROR
> test_get_bad (jupyterlab_server.tests.test_settings_api.SettingsAPITest) ... 
> ERROR
> test_listing (jupyterlab_server.tests.test_settings_api.SettingsAPITest) ... 
> ERROR
> test_patch (jupyterlab_server.tests.test_settings_api.SettingsAPITest) ... 
> ERROR
> test_patch_bad_data 
> (jupyterlab_server.tests.test_settings_api.SettingsAPITest) ... ERROR
> test_patch_wrong_id 
> (jupyterlab_server.tests.test_settings_api.SettingsAPITest) ... ERROR
> test_bad_put (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest) 
> ... ERROR
> test_blank_put 
> (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest) ... ERROR
> test_delete (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest) 
> ... ERROR
> test_get (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest) ... 
> ERROR
> test_listing (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest) 
> ... ERROR
> test_put (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest) ... 
> ERROR
>
> ======================================================================
> ERROR: test_get (jupyterlab_server.tests.test_settings_api.SettingsAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_settings_api.py",
>  line 31, in setUp
>     dst = os.path.join(self.lab_config.schemas_dir, '@jupyterlab')
> AttributeError: 'SettingsAPITest' object has no attribute 'lab_config'
>
> ======================================================================
> ERROR: test_get_bad 
> (jupyterlab_server.tests.test_settings_api.SettingsAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_settings_api.py",
>  line 31, in setUp
>     dst = os.path.join(self.lab_config.schemas_dir, '@jupyterlab')
> AttributeError: 'SettingsAPITest' object has no attribute 'lab_config'
>
> ======================================================================
> ERROR: test_listing 
> (jupyterlab_server.tests.test_settings_api.SettingsAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_settings_api.py",
>  line 31, in setUp
>     dst = os.path.join(self.lab_config.schemas_dir, '@jupyterlab')
> AttributeError: 'SettingsAPITest' object has no attribute 'lab_config'
>
> ======================================================================
> ERROR: test_patch (jupyterlab_server.tests.test_settings_api.SettingsAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_settings_api.py",
>  line 31, in setUp
>     dst = os.path.join(self.lab_config.schemas_dir, '@jupyterlab')
> AttributeError: 'SettingsAPITest' object has no attribute 'lab_config'
>
> ======================================================================
> ERROR: test_patch_bad_data 
> (jupyterlab_server.tests.test_settings_api.SettingsAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_settings_api.py",
>  line 31, in setUp
>     dst = os.path.join(self.lab_config.schemas_dir, '@jupyterlab')
> AttributeError: 'SettingsAPITest' object has no attribute 'lab_config'
>
> ======================================================================
> ERROR: test_patch_wrong_id 
> (jupyterlab_server.tests.test_settings_api.SettingsAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_settings_api.py",
>  line 31, in setUp
>     dst = os.path.join(self.lab_config.schemas_dir, '@jupyterlab')
> AttributeError: 'SettingsAPITest' object has no attribute 'lab_config'
>
> ======================================================================
> ERROR: test_bad_put 
> (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_workspaces_api.py",
>  line 34, in setUp
>     dst = os.path.join(self.lab_config.workspaces_dir, item)
> AttributeError: 'WorkspacesAPITest' object has no attribute 'lab_config'
>
> ======================================================================
> ERROR: test_blank_put 
> (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_workspaces_api.py",
>  line 34, in setUp
>     dst = os.path.join(self.lab_config.workspaces_dir, item)
> AttributeError: 'WorkspacesAPITest' object has no attribute 'lab_config'
>
> ======================================================================
> ERROR: test_delete 
> (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_workspaces_api.py",
>  line 34, in setUp
>     dst = os.path.join(self.lab_config.workspaces_dir, item)
> AttributeError: 'WorkspacesAPITest' object has no attribute 'lab_config'
>
> ======================================================================
> ERROR: test_get 
> (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_workspaces_api.py",
>  line 34, in setUp
>     dst = os.path.join(self.lab_config.workspaces_dir, item)
> AttributeError: 'WorkspacesAPITest' object has no attribute 'lab_config'
>
> ======================================================================
> ERROR: test_listing 
> (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_workspaces_api.py",
>  line 34, in setUp
>     dst = os.path.join(self.lab_config.workspaces_dir, item)
> AttributeError: 'WorkspacesAPITest' object has no attribute 'lab_config'
>
> ======================================================================
> ERROR: test_put 
> (jupyterlab_server.tests.test_workspaces_api.WorkspacesAPITest)
> ----------------------------------------------------------------------
> Traceback (most recent call last):
>   File 
> "/tmp/guix-build-python-jupyterlab-server-1.2.0.drv-0/jupyterlab_server-1.2.0/jupyterlab_server/tests/test_workspaces_api.py",
>  line 34, in setUp
>     dst = os.path.join(self.lab_config.workspaces_dir, item)
> AttributeError: 'WorkspacesAPITest' object has no attribute 'lab_config'
>
> ----------------------------------------------------------------------
> Ran 12 tests in 0.001s
>
> FAILED (errors=12)
> Test failed: <unittest.runner.TextTestResult run=12 errors=12 failures=0>
> error: Test failed: <unittest.runner.TextTestResult run=12 errors=12 
> failures=0>
> command "python" "-c" "import setuptools, 
> tokenize;__file__='setup.py';f=getattr(tokenize, 'open', 
> open)(__file__);code=f.read().replace('\\r\\n', 
> '\\n');f.close();exec(compile(code, __file__, 'exec'))" "test" failed with 
> status 1
> ~~~~~END~~~~~
>
> I have some thoughts about this:
>
> The Python error does not really tell me what is wrong. I don't know
> why the `WorkspacesAPITest` does not have an attribute named `lab_config`.
>
> One can see, that those are all API tests. Since there were problems
> in the previous step with network, perhaps it is a network thing here
> as well? (Is network, even if localhost for testing, available in the
> "check phase"?)
>
> It could also simply be, that some PyPI package has failing tests. I
> don't know how one could then skip such tests.
>
> I guess I will summarize everything in the end and put it in a
> repository as a kind of "guide", so that others can use it or learn
> from the process.
>
> Regards,
> Zelphir
>
> On 10/19/20 6:54 PM, Efraim Flashner wrote:
>> It looks like you need to add python-ipykernel to native-inputs.
>> Unless it's needed to run the program and not just for the test
>> suite, in which case it should go in propagated-inputs. There's no
>> network available in the build environment so it can't retrieve
>> ipykernel while building.
>>
>>
>> On October 19, 2020 2:31:53 PM UTC, Zelphir Kaltstahl
>> <zelphirkaltstahl@posteo.de> wrote:
>>
>>     Hello Efraim!
>>
>>     Thank you! Your idea of replacing "-" with "_" seems to partially
>>     help:
>>
>>     The package is downloaded and byte compiled. However, afterwards
>>     there is a problem, when it tries to copy the byte-compiled files
>>     in the "wrap phase" (comments inserted in some places):
>>
>>     ~~~~START~~~~
>>     ### ... a lot of output before this ...
>>
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/__init__.py
>>  to __init__.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/_version.py
>>  to _version.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/app.py
>>  to app.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/handlers.py
>>  to handlers.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/listings_handler.py
>>  to listings_handler.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/process.py
>>  to process.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/process_app.py
>>  to process_app.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/server.py
>>  to server.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/servertest.py
>>  to servertest.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/settings_handler.py
>>  to settings_handler.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/themes_handler.py
>>  to themes_handler.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/workspaces_handler.py
>>  to workspaces_handler.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/tests/__init__.py
>>  to __init__.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/tests/test_settings_api.py
>>  to test_settings_api.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/tests/test_workspaces_api.py
>>  to test_workspaces_api.cpython-38.pyc
>>     byte-compiling 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server/tests/utils.py
>>  to utils.cpython-38.pyc
>>
>>     ### ... seems byte-compiling went without problems, but not comes the 
>> problem ...
>>
>>     running install_egg_info
>>     Copying jupyterlab_server.egg-info to 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/lib/python3.8/site-packages/jupyterlab_server-1.2.0-py3.8.egg-info
>>     running install_scripts
>>     phase `install' succeeded after 0.3 seconds
>>     starting phase `wrap'
>>     find-files: 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/bin:
>>  No such file or directory
>>     find-files: 
>> /gnu/store/yr7q21bws1xgx3p2dy9cfdiknjpsajm6-python-jupyterlab-server-1.2.0/sbin:
>>  No such file or directory
>>     phase `wrap' succeeded after 0.0 seconds
>>     starting phase `check'
>>     running "python setup.py" with command "test" and parameters ()
>>     running test
>>     Searching for ipykernel
>>     Reading https://pypi.org/simple/ipykernel/
>>     Download error on https://pypi.org/simple/ipykernel/: [Errno -2] Name or 
>> service not known -- Some packages may not be found!
>>     Couldn't find index page for 'ipykernel' (maybe misspelled?)
>>     Scanning index of all packages (this may take a while)
>>     Reading https://pypi.org/simple/
>>     Download error on https://pypi.org/simple/: [Errno -2] Name or service 
>> not known -- Some packages may not be found!
>>     No local packages or working download links found for ipykernel
>>     error: Could not find suitable distribution for 
>> Requirement.parse('ipykernel')
>>     command "python" "-c" "import setuptools, 
>> tokenize;__file__='setup.py';f=getattr(tokenize, 'open', 
>> open)(__file__);code=f.read().replace('\\r\\n', 
>> '\\n');f.close();exec(compile(code, __file__, 'exec'))" "test" failed with 
>> status 1
>>     ~~~~~END~~~~~
>>
>>     So it seems, that while the download URL is corrected, there is
>>     another place, where Guix has an error now, resulting in a final
>>     error shown in command line:
>>
>>     ~~~~START~~~~
>>     $ guix time-machine --channels=channels.scm -- environment 
>> --manifest=manifest.scm --load=jupyterlab.scm
>>     Updating channel 'guix' from Git repository at 
>> 'https://git.savannah.gnu.org/git/guix.git'...
>>     substitute: updating substitutes from 'https://ci.guix.gnu.org'... 100.0%
>>     The following derivations will be built:
>>        
>> /gnu/store/wzmfn9m45bmsbrx094rv3lf3w0rpmw49-python-pytest-check-links-0.3.0.drv
>>        
>> /gnu/store/96xf5mrg134mcsp01b0m1qs1lxkb401a-python-jupyterlab-server-1.2.0.drv
>>        
>> /gnu/store/32a28hd7aainwn0hfsnf3blh8prmfz61-jupyterlab_server-1.2.0.tar.gz.drv
>>
>>     3,9 MB will be downloaded
>>     downloading from 
>> https://ci.guix.gnu.org/nar/lzip/54kpl9psx16jwic4gpnjwh44kim04wlk-python-notebook-5.7.4
>>  ...
>>      python-notebook-5.7.4  3.7MiB                                           
>>                                                                              
>>                                                                              
>>    5.1MiB/s 00:01 [##################] 100.0%
>>
>>     building 
>> /gnu/store/32a28hd7aainwn0hfsnf3blh8prmfz61-jupyterlab_server-1.2.0.tar.gz.drv...
>>     downloading from 
>> https://files.pythonhosted.org/packages/source/j/jupyterlab_server/jupyterlab_server-1.2.0.tar.gz
>>  ...
>>     building 
>> /gnu/store/wzmfn9m45bmsbrx094rv3lf3w0rpmw49-python-pytest-check-links-0.3.0.drv...
>>     building 
>> /gnu/store/96xf5mrg134mcsp01b0m1qs1lxkb401a-python-jupyterlab-server-1.2.0.drv...
>>     \ 'check' phasebuilder for 
>> `/gnu/store/96xf5mrg134mcsp01b0m1qs1lxkb401a-python-jupyterlab-server-1.2.0.drv'
>>  failed with exit code 1
>>     build of 
>> /gnu/store/96xf5mrg134mcsp01b0m1qs1lxkb401a-python-jupyterlab-server-1.2.0.drv
>>  failed
>>     View build log at 
>> '/var/log/guix/drvs/96/xf5mrg134mcsp01b0m1qs1lxkb401a-python-jupyterlab-server-1.2.0.drv.bz2'.
>>     guix environment: error: build of 
>> `/gnu/store/96xf5mrg134mcsp01b0m1qs1lxkb401a-python-jupyterlab-server-1.2.0.drv'
>>  failed
>>     ~~~~~END~~~~~
>>
>>     Apparently ipykernel is not found, but when I visit
>>     https://pypi.org/simple/ipykernel/, I see packages there.
>>
>>     From the logs:
>>
>>     ~~~~START~~~~
>>     Download error on https://pypi.org/simple/ipykernel/: [Errno -2] Name or 
>> service not known -- Some packages may not be found!
>>     Couldn't find index page for 'ipykernel' (maybe misspelled?)
>>     ~~~~~END~~~~~
>>
>>     Do I need to add another input in my `jupyterlab.scm`? (How?) Or
>>     perhaps I need to create a separate `ipykernel.scm` which
>>     contains the output of `guix import pypi --recursive ipykernel`?
>>
>>     However, it somehow seems to fail for PyPI simple in general
>>     (from the logs again):
>>
>>     ~~~~START~~~~
>>     Reading https://pypi.org/simple/
>>     Download error on https://pypi.org/simple/: [Errno -2] Name or service 
>> not known -- Some packages may not be found!
>>     No local packages or working download links found for ipykernel
>>     error: Could not find suitable distribution for 
>> Requirement.parse('ipykernel')
>>     command "python" "-c" "import setuptools, 
>> tokenize;__file__='setup.py';f=getattr(tokenize, 'open', 
>> open)(__file__);code=f.read().replace('\\r\\n', 
>> '\\n');f.close();exec(compile(code, __file__, 'exec'))" "test" failed with 
>> status 1
>>     ~~~~~END~~~~~
>>
>>     Thanks,
>>     Zelphir
>>
>>
>>     On 10/18/20 6:35 PM, Efraim Flashner wrote:
>>>     On Sun, Oct 18, 2020 at 01:55:49PM +0200, Zelphir Kaltstahl wrote:
>>>>     Hello Guix Users, hello Zimoun and Tobias!
>>>>
>>>>     Thanks for your information regarding the importer syntax thing.
>>>>
>>>>     I continued trying to get a jupyterlab environment today.
>>>>
>>>>     Here is what I did so far:
>>>>
>>>>     (1) Create my manifest file:
>>>>
>>>>     ~~~~START~~~~
>>>>     (specifications->manifest
>>>>      '("python"))
>>>>     ~~~~~END~~~~~
>>>>
>>>>     (2) Create my channels file:
>>>>
>>>>     ~~~~START~~~~
>>>>     $ guix describe --format=channels > channels.scm
>>>>     $ cat channels.scm
>>>>     (list (channel
>>>>             (name 'guix)
>>>>             (url "https://git.savannah.gnu.org/git/guix.git";)
>>>>             (commit
>>>>               "6ca673b30dac281ba27a8dac242c0ac83e5e354b")
>>>>             (introduction
>>>>               (make-channel-introduction
>>>>                 "9edb3f66fd807b096b48283debdcddccfea34bad"
>>>>                 (openpgp-fingerprint
>>>>                   "BBB0 2DDF 2CEA F6A8 0D1D  E643 A2A0 6DF2 A33A 54FA")))))
>>>>     ~~~~~END~~~~~
>>>>
>>>>     (3) Create my jupyterlab PyPI import file, this time around using the
>>>>     "/" instead of "@" for specifying the version:
>>>>
>>>>     ~~~~START~~~~
>>>>     $ guix import pypi --recursive jupyterlab/2.1.5 > jupyterlab.scm
>>>>     ~~~~~END~~~~~
>>>>
>>>>     (4) Add missing import expressions and add output expression at the 
>>>> end:
>>>>
>>>>     ~~~~START~~~~
>>>>     ;; add module imports
>>>>     (use-modules
>>>>      (guix packages)
>>>>      (guix download)
>>>>      (guix build-system python)
>>>>      ((guix licenses) #:prefix license:)
>>>>      ;; use `guix environment --ad-hoc python-jinja2 -- guix package -A 
>>>> python-jinja2` to find the location of python-jinja2, which is 
>>>> gnu/packages/python-xyz.scm
>>>     This can be just 'guix package -A python-jinja2', no need for the
>>>     environment.
>>>
>>>>      (gnu packages python-xyz)
>>>>      ;; for python-tornado
>>>>      (gnu packages python-web)
>>>>      ;; for python-pytest
>>>>      (gnu packages check))
>>>>
>>>>     ;; QUESTION: Why are those required packages not imported by guix 
>>>> automatically?
>>>>     ;; QUESTION: Why are the manually imported packages not actually in 
>>>> files with their own name, but instead jinja2 -> python-xyz, tornado -> 
>>>> python-web, and pytest -> check?
>>>>     ;; QUESTION: Is my process of finding the files in which the packages 
>>>> are correct or just working by chance?
>>>>
>>>>     (define-public python-jupyterlab-server
>>>>       (package
>>>>         (name "python-jupyterlab-server")
>>>>         (version "1.2.0")
>>>>         (source
>>>>           (origin
>>>>             (method url-fetch)
>>>>             (uri (pypi-uri "jupyterlab-server" version))
>>>>             (sha256
>>>>               (base32
>>>>                 "132xby7531rbrjg9bqvsx86birr1blynjxy8gi5kcnb6x7fxjcal"))))
>>>>         (build-system python-build-system)
>>>>         (propagated-inputs
>>>>           `(("python-jinja2" ,python-jinja2)
>>>>             ("python-json5" ,python-json5)
>>>>             ("python-jsonschema" ,python-jsonschema)
>>>>             ("python-notebook" ,python-notebook)
>>>>             ("python-requests" ,python-requests)))
>>>>         (native-inputs
>>>>           `(("python-pytest" ,python-pytest)
>>>>             ("python-requests" ,python-requests)))
>>>>         (home-page "https://jupyter.org";)
>>>>         (synopsis "JupyterLab Server")
>>>>         (description "JupyterLab Server")
>>>>         (license license:bsd-3)))
>>>>
>>>>     (define-public python-jupyterlab
>>>>       (package
>>>>         (name "python-jupyterlab")
>>>>         (version "2.1.5")
>>>>         (source
>>>>           (origin
>>>>             (method url-fetch)
>>>>             (uri (pypi-uri "jupyterlab" version))
>>>>             (sha256
>>>>               (base32
>>>>                 "162jn51cg36fsn4l2zhnb5n4nbkhm9wlv974ggcnmdij3i4r4yya"))))
>>>>         (build-system python-build-system)
>>>>         (propagated-inputs
>>>>           `(("python-jinja2" ,python-jinja2)
>>>>             ("python-jupyterlab-server"
>>>>              ,python-jupyterlab-server)
>>>>             ("python-notebook" ,python-notebook)
>>>>             ("python-tornado" ,python-tornado)))
>>>>         (native-inputs
>>>>           `(("python-pytest" ,python-pytest)
>>>>             ("python-pytest-check-links"
>>>>              ,python-pytest-check-links)
>>>>             ("python-requests" ,python-requests)
>>>>             ("python-virtualenv" ,python-virtualenv)
>>>>             ("python-wheel" ,python-wheel)))
>>>>         (home-page "http://jupyter.org";)
>>>>         (synopsis
>>>>           "The JupyterLab notebook server extension.")
>>>>         (description
>>>>           "The JupyterLab notebook server extension.")
>>>>         (license license:bsd-3)))
>>>>
>>>>     python-jupyterlab
>>>>     ~~~~~END~~~~~
>>>>
>>>>     And as noted in the comments, I have 3 questions at this point:
>>>>
>>>>     (Q1) Why are those required packages not imported by guix 
>>>> automatically?
>>>>     (My guess: This functionality simply has not yet been implemented.)
>>>>
>>>>     (Q2) Why are the manually imported packages not actually in files with
>>>>     their own name, but instead jinja2 -> python-xyt, tornado -> 
>>>> python-web,
>>>>     and pytest -> check? Why not (gnu packages python pytest) for example?
>>>>
>>>>     (Q3) Is my process of finding the files in which the packages are
>>>>     correct or just working by chance? Basically I am creating temporary
>>>>     environments, in which I then lookup "where would the package be
>>>>     installed" and then exit the temporary environment to use that
>>>>     information in my imported package file's import expressions /
>>>>     use-modules expression. This seems to be a bit of a convoluted process,
>>>>     though worth it, if it always works in the end.
>>>>
>>>>     (4) Now I run my time-machine command:
>>>>
>>>>     ~~~~START~~~~
>>>>     $ guix time-machine --channels=channels.scm -- environment 
>>>> --manifest=manifest.scm --load=jupyterlab.scm
>>>>     ~~~~~END~~~~~
>>>>
>>>>     This take a moment and then I get an error (the full output is longer,
>>>>     but when running it multiple times, already successful steps are not 
>>>> all
>>>>     done repeatedly, so the output is then reduced to what fails):
>>>>
>>>>     ~~~~START~~~~
>>>>     $ guix time-machine --channels=channels.scm -- environment 
>>>> --manifest=manifest.scm --load=jupyterlab.scm
>>>>     Updating channel 'guix' from Git repository at 
>>>> 'https://git.savannah.gnu.org/git/guix.git'...
>>>>     The following derivations will be built:
>>>>        
>>>> /gnu/store/wzmfn9m45bmsbrx094rv3lf3w0rpmw49-python-pytest-check-links-0.3.0.drv
>>>>        
>>>> /gnu/store/n9i421lrbwrr8d0947w5vma7rhy3iyba-python-jupyterlab-server-1.2.0.drv
>>>>        
>>>> /gnu/store/s7jc2dbb0bnrahxklmszmpfv8klgw3sd-jupyterlab-server-1.2.0.tar.gz.drv
>>>>
>>>>     4,2 MB will be downloaded
>>>>     downloading from 
>>>> https://ci.guix.gnu.org/nar/lzip/2nahbs5v8q073gjmy224gk0h5lsh1kkw-python-nbconvert-5.0.0b1
>>>>  ...
>>>>      python-nbconvert-5.0.0b1  301KiB                                      
>>>>                                                                            
>>>>                                                                            
>>>>          2.0MiB/s 00:00 [##################] 100.0%
>>>>
>>>>     building 
>>>> /gnu/store/s7jc2dbb0bnrahxklmszmpfv8klgw3sd-jupyterlab-server-1.2.0.tar.gz.drv...
>>>>     |builder for 
>>>> `/gnu/store/s7jc2dbb0bnrahxklmszmpfv8klgw3sd-jupyterlab-server-1.2.0.tar.gz.drv'
>>>>  failed to produce output path 
>>>> `/gnu/store/92md7gh966n4fzj6al267lqq4xjx0ncf-jupyterlab-server-1.2.0.tar.gz'
>>>>     build of 
>>>> /gnu/store/s7jc2dbb0bnrahxklmszmpfv8klgw3sd-jupyterlab-server-1.2.0.tar.gz.drv
>>>>  failed
>>>>     View build log at 
>>>> '/var/log/guix/drvs/s7/jc2dbb0bnrahxklmszmpfv8klgw3sd-jupyterlab-server-1.2.0.tar.gz.drv.bz2'.
>>>>     cannot build derivation 
>>>> `/gnu/store/n9i421lrbwrr8d0947w5vma7rhy3iyba-python-jupyterlab-server-1.2.0.drv':
>>>>  1 dependencies couldn't be built
>>>>     killing process 7384
>>>>     guix environment: error: build of 
>>>> `/gnu/store/n9i421lrbwrr8d0947w5vma7rhy3iyba-python-jupyterlab-server-1.2.0.drv'
>>>>  failed
>>>>     ~~~~~END~~~~~
>>>>
>>>>     OK, an error, perhaps I can understand it. Lets look at that log file:
>>>>
>>>>     ~~~~START~~~~
>>>>     $ cp 
>>>> /var/log/guix/drvs/s7/jc2dbb0bnrahxklmszmpfv8klgw3sd-jupyterlab-server-1.2.0.tar.gz.drv.bz2
>>>>  .
>>>>     $ bzip2 --decompress 
>>>> jc2dbb0bnrahxklmszmpfv8klgw3sd-jupyterlab-server-1.2.0.tar.gz.drv.bz2
>>>>     $ cat jc2dbb0bnrahxklmszmpfv8klgw3sd-jupyterlab-server-1.2.0.tar.gz.drv
>>>>
>>>>     Starting download of 
>>>> /gnu/store/92md7gh966n4fzj6al267lqq4xjx0ncf-jupyterlab-server-1.2.0.tar.gz
>>>>     From 
>>>> https://files.pythonhosted.org/packages/source/j/jupyterlab-server/jupyterlab-server-1.2.0.tar.gz...
>>>>     download failed 
>>>> "https://files.pythonhosted.org/packages/source/j/jupyterlab-server/jupyterlab-server-1.2.0.tar.gz";
>>>>  404 "Not Found"
>>>>
>>>>     Starting download of 
>>>> /gnu/store/92md7gh966n4fzj6al267lqq4xjx0ncf-jupyterlab-server-1.2.0.tar.gz
>>>>     From 
>>>> https://ci.guix.gnu.org/file/jupyterlab-server-1.2.0.tar.gz/sha256/132xby7531rbrjg9bqvsx86birr1blynjxy8gi5kcnb6x7fxjcal...
>>>>     download failed 
>>>> "https://ci.guix.gnu.org/file/jupyterlab-server-1.2.0.tar.gz/sha256/132xby7531rbrjg9bqvsx86birr1blynjxy8gi5kcnb6x7fxjcal";
>>>>  404 "Not Found"
>>>>
>>>>     Starting download of 
>>>> /gnu/store/92md7gh966n4fzj6al267lqq4xjx0ncf-jupyterlab-server-1.2.0.tar.gz
>>>>     From 
>>>> https://tarballs.nixos.org/sha256/132xby7531rbrjg9bqvsx86birr1blynjxy8gi5kcnb6x7fxjcal...
>>>>     download failed 
>>>> "https://tarballs.nixos.org/sha256/132xby7531rbrjg9bqvsx86birr1blynjxy8gi5kcnb6x7fxjcal";
>>>>  404 "Not Found"
>>>>
>>>>     Starting download of 
>>>> /gnu/store/92md7gh966n4fzj6al267lqq4xjx0ncf-jupyterlab-server-1.2.0.tar.gz
>>>>     From 
>>>> https://archive.softwareheritage.org/api/1/content/sha256:5431d9dde96659364b7cc877693d5d21e7b80cea7ae3959ecc2b87518e5f5d8c/raw/...
>>>>     download failed 
>>>> "https://archive.softwareheritage.org/api/1/content/sha256:5431d9dde96659364b7cc877693d5d21e7b80cea7ae3959ecc2b87518e5f5d8c/raw/";
>>>>  404 "Not Found"
>>>>     failed to download 
>>>> "/gnu/store/92md7gh966n4fzj6al267lqq4xjx0ncf-jupyterlab-server-1.2.0.tar.gz"
>>>>  from 
>>>> "https://files.pythonhosted.org/packages/source/j/jupyterlab-server/jupyterlab-server-1.2.0.tar.gz";
>>>>     ~~~~~END~~~~~
>>>>
>>>>     So it seems, that the jupyterlab-server file is simply not downloadable
>>>>     any longer!
>>>>
>>>>     Trying using wget:
>>>>
>>>>     ~~~~START~~~~
>>>>     $ wget 
>>>> https://files.pythonhosted.org/packages/source/j/jupyterlab-server/jupyterlab-server-1.2.0.tar.gz
>>>>     --2020-10-18 13:49:52--  
>>>> https://files.pythonhosted.org/packages/source/j/jupyterlab-server/jupyterlab-server-1.2.0.tar.gz
>>>>     Resolving files.pythonhosted.org (files.pythonhosted.org)... 
>>>> 2a04:4e42:9::319, 151.101.37.63
>>>>     Connecting to files.pythonhosted.org 
>>>> (files.pythonhosted.org)|2a04:4e42:9::319|:443... failed: Connection 
>>>> refused.
>>>>     Connecting to files.pythonhosted.org 
>>>> (files.pythonhosted.org)|151.101.37.63|:443... connected.
>>>>     HTTP request sent, awaiting response... 404 Not Found
>>>>     2020-10-18 13:49:53 ERROR 404: Not Found.
>>>>     ~~~~~END~~~~~
>>>>
>>>>     So now I am out of ideas. It seems the file is not available any longer
>>>>     and the definition of jupyterlab needs to be updated somewhere, so that
>>>>     it does not try to download an old or non-existent version of
>>>>     jupyter-labserver. But how is this usually done? Can I specify it
>>>>     somewhere in one of the 3 files I have, or am I dependent on someone
>>>>     fixing the jupyterlab-server dependency / input for juypterlab?
>>>>
>>>>     Thanks for your help so far! Tell me, if I need to provide any more
>>>>     information to solve the problem.
>>>     Try chaning the URL line to (uri (pypi-uri "jupyterlab_server" 
>>> version)),
>>>     with an underscore (_). I don't have any special suggestions for knowing
>>>     that it should be an underscore instead of a dash. The best I have is
>>>     the output from 'guix import pypi jupyterlab-server:
>>>
>>>     (ins)efraim@E5400 ~$ guix import pypi jupyterlab-server
>>>
>>>     Starting download of /tmp/guix-file.ayJ41F
>>>     From 
>>> https://files.pythonhosted.org/packages/92/54/5f321ca4cebfb644ac59eb21601b46a2ff9831ffe1b4e5a588f2a7e98d48/jupyterlab_server-1.2.0.tar.gz...
>>>      …er-1.2.0.tar.gz  22KiB               57KiB/s 00:00 
>>> [##################] 100.0%
>>>
>>>
>>>
>>>>     Best regards,
>>>>     Zelphir
>>>>
>>>>
>>>>     On 10/16/20 2:25 PM, Tobias Geerinckx-Rice wrote:
>>>>>     Zelphir,
>>>>>
>>>>>     Zelphir Kaltstahl 写道:
>>>>>>     $ guix import pypi 'jupyterlab@2.1.5' --recursive
>>>>>     It will work if you substitute ‘/’ for ‘@’.  Yes, this is a happy
>>>>>     accident specific to the PyPI importer, and I'm sure you can guess why
>>>>>     it happens to work.
>>>>>
>>>>>>>     guix import hackage mtl@2.1.3.1
>>>>>>     But that is in the "hackage" import section. Is the same not 
>>>>>> available
>>>>>>     for PyPI?
>>>>>     [...]
>>>>>
>>>>>>     Do the various importers work differently?
>>>>>     Unfortunately so.  It would be great(TM) if PACKAGE[@VERSION] were
>>>>>     standard.  Each importer could handle it properly (e.g., by turning it
>>>>>     into "/") or return a friendlier ‘the foo importer does not yet
>>>>>     support versions’ error.
>>>>>
>>>>>     I don't have the time, but this sounds like a good intermediate-level
>>>>>     hack for someone who does :-)
>>>>>
>>>>>     Kind regards,
>>>>>
>>>>>     T G-R
>>>>     -- 
>>>>     repositories: https://notabug.org/ZelphirKaltstahl
>>>>
>>     -- 
>>     repositories: https://notabug.org/ZelphirKaltstahl
>>
>>
>> -- 
>> Sent from my Android device with K-9 Mail. Please excuse my brevity. 
> -- 
> repositories: https://notabug.org/ZelphirKaltstahl

-- 
repositories: https://notabug.org/ZelphirKaltstahl



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