Error when running pypi2nix command on obonet

[blakesweeney]

Description

The setup.py file is trying to read the readme file to create the long description, but the readme isn't in the downloaded files. If I run pypi with -E pandoc this still crashes because pandoc cannot read the file.

Traceback

% cat requirements.txt
obonet
networkx
% pypi2nix --version
1.6.0
% pypi2nix -v -V 3.5 -r requirements.txt
|-> nix-shell /nix/store/953f650qfbikqb4c32fnv1ifqak5rnpy-pypi2nix-1.6.0/pkgs/pypi2nix/pip.nix --argstr wheel_cache_dir /var/folders/0p/ntwwt0wn6mn977__st9132m80000gn/T/pypi2nix/cache/wheel --argstr download_cache_dir /var/folders/0p/ntwwt0wn6mn977__st9132m80000gn/T/pypi2nix/cache/download --argstr project_dir /var/folders/0p/ntwwt0wn6mn977__st9132m80000gn/T/pypi2nix/05cc0db81167a5ec9588a4477ea7ee07 --argstr python_version python35 --arg requirements_files [ "/var/folders/0p/ntwwt0wn6mn977__st9132m80000gn/T/pypi2nix/05cc0db81167a5ec9588a4477ea7ee07/6bbbc2206e4b2c64140046db449d74cb.txt" ] --arg extra_build_inputs [  ] --arg setup_requires [  ] --argstr pip_build_dir /var/folders/0p/ntwwt0wn6mn977__st9132m80000gn/T/pypi2nix/cache/pip -I nixpkgs=/Users/blake/.nix-defexpr/channels/nixpkgs --show-trace --pure --run exit    Collecting obonet (from -r /var/folders/0p/ntwwt0wn6mn977__st9132m80000gn/T/pypi2nix/05cc0db81167a5ec9588a4477ea7ee07/6bbbc2206e4b2c64140046db449d74cb.txt (line 1))
      Using cached obonet-0.2.1.tar.gz
        Complete output from command python setup.py egg_info:
        README.md conversion to reStructuredText failed. Error:
        [Errno 2] No such file or directory: 'pandoc'
        Traceback (most recent call last):
          File "/var/folders/0p/ntwwt0wn6mn977__st9132m80000gn/T/pypi2nix/cache/pip/obonet/setup.py", line 22, in <module>
            long_description = subprocess.check_output(args)
          File "/nix/store/vjqr0kb99jnnd04r505192gq2yrwgwv3-python3-3.5.3/lib/python3.5/subprocess.py", line 316, in check_output
            **kwargs).stdout
          File "/nix/store/vjqr0kb99jnnd04r505192gq2yrwgwv3-python3-3.5.3/lib/python3.5/subprocess.py", line 383, in run
            with Popen(*popenargs, **kwargs) as process:
          File "/nix/store/vjqr0kb99jnnd04r505192gq2yrwgwv3-python3-3.5.3/lib/python3.5/subprocess.py", line 676, in __init__
            restore_signals, start_new_session)
          File "/nix/store/vjqr0kb99jnnd04r505192gq2yrwgwv3-python3-3.5.3/lib/python3.5/subprocess.py", line 1282, in _execute_child
            raise child_exception_type(errno_num, err_msg)
        FileNotFoundError: [Errno 2] No such file or directory: 'pandoc'
        
        During handling of the above exception, another exception occurred:
        
        Traceback (most recent call last):
          File "<string>", line 1, in <module>
          File "/var/folders/0p/ntwwt0wn6mn977__st9132m80000gn/T/pypi2nix/cache/pip/obonet/setup.py", line 28, in <module>
            with open(readme_path) as read_file:
        FileNotFoundError: [Errno 2] No such file or directory: '/var/folders/0p/ntwwt0wn6mn977__st9132m80000gn/T/pypi2nix/cache/pip/obonet/README.md'
        
        ----------------------------------------
    Command "python setup.py egg_info" failed with error code 1 in /var/folders/0p/ntwwt0wn6mn977__st9132m80000gn/T/pypi2nix/cache/pip/obonet/

[seppeljordan]

This sounds like an issue with obonet. To work around this you could try something like this in your requirements.txt

git+https://github.com/dhimmel/obonet.git#egg=obonet

This would download the source from the git and you'll probably have the README.md

Ping me ( @seppeljordan ) or reopen this issue if you still need help or you think that this is NOT an issue with obonet but an issue with pypi2nix.

[blakesweeney]

That still doesn't work. I am now getting:

% nix-shell --version
nix-shell (Nix) 1.11.6
% nix-shell
these derivations will be built:
  /nix/store/b75pm8c3kw3dv1asp70xws6dbpkg5pxv-obonet.git.drv
  /nix/store/g7y7vkx3q3zhypkig8irv63ra6xqdn7c-python3.5-obonet-0.2.1.drv
  /nix/store/qqz461bb4yi6y219dmb8qhfgaib4i2ds-python3.5-python35-interpreter.drv
building path(s) ‘/nix/store/jbb6pmkdpgn5z3gyhal0nrxib315c42n-obonet.git’

trying https://github.com/dhimmel/obonet.git
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   178  100   178    0     0    548      0 --:--:-- --:--:-- --:--:--   554
100 58252    0 58252    0     0  78532      0 --:--:-- --:--:-- --:--:-- 4321k
output path ‘/nix/store/jbb6pmkdpgn5z3gyhal0nrxib315c42n-obonet.git’ has sha256 hash ‘0cg52vb93imvcc1pcr0y9fjyxfch8l40fsgjnsknw06zdm210kk6’ when ‘0qpnwgwndsiclvgw7bc9w0ysy24lrdp1ff6d30bh3p83mk43jr0i’ was expected
cannot build derivation ‘/nix/store/g7y7vkx3q3zhypkig8irv63ra6xqdn7c-python3.5-obonet-0.2.1.drv’: 1 dependencies couldn't be built
error: build of ‘/nix/store/g7y7vkx3q3zhypkig8irv63ra6xqdn7c-python3.5-obonet-0.2.1.drv’ failed

I think this is because nix changed something about how it computes hashes with git clones a while ago. At least I recall that happening and it would explain what is going on here. Do I need to update nix, or is this a problem with pypi2nix?

[garbas]

this worked for me

% pypi2nix -v -V 3.5 -e "https://github.com/dhimmel/obonet/archive/master.zip#egg=obonet" -e networkx -E pandoc
% nix-build requirements.nix -A interpreter

[blakesweeney]

Thanks this fixed the issue! Thanks for making pypi2nix it is really helpful! Blake