Installing GNU Radio using PyBOMBS

Question

I am following the installation instructions on https://github.com/gnuradio/pybombs.

I get the following error message:

→ sudo -H pybombs prefix init ~/prefix -a myprefix -R gnuradio-default
PyBOMBS.ConfigManager - INFO - Prefix Python version is: 2.7.6
PyBOMBS - INFO - PyBOMBS Version 2.3.3a0
PyBOMBS.prefix - WARNING - There already is a prefix in `~/prefix'.
Continue using this path Y/[N]? y
PyBOMBS.ConfigManager - INFO - Prefix Python version is: 2.7.6
Alias `myprefix' already exists, overwrite Y/[N]? y
PyBOMBS.ConfigManager - INFO - Prefix Python version is: 2.7.6
PyBOMBS.prefix - INFO - Installing default packages for prefix...
PyBOMBS.prefix - INFO -
  - <ruamel.yaml.comments.CommentedSeq object at 0x7f3891d44d20>
  - <ruamel.yaml.comments.CommentedSeq object at 0x7f3891d44d70>
PyBOMBS.install_manager - INFO - Phase 1: Creating install tree and installing binary packages:
PyBOMBS.get_recipe - ERROR - Error fetching recipe `<ruamel.yaml.comments.CommentedSeq object at 0x7f3891d44d20>':
Package <ruamel.yaml.comments.CommentedSeq object at 0x7f3891d44d20> has no recipe file!

It seems like a mismatch in the use of ruamel.yamel. Reinstalling ruamel.yamel does not solve this:

→ sudo -H pip install --upgrade --force-reinstall ruamel.yaml
Collecting ruamel.yaml
  Downloading https://files.pythonhosted.org/packages/3c/bf/6be7b1510270d785ca53193d06ba64c2f2bd969db732d108e2a82cbc9a0e/ruamel.yaml-0.15.57-cp27-cp27mu-manylinux1_x86_64.whl (590kB)
Collecting ruamel.ordereddict; platform_python_implementation == "CPython" and python_version <= "2.7" (from ruamel.yaml)
  Using cached https://files.pythonhosted.org/packages/f3/2c/fa6d75dc459b371ed3b88fdbf8042785ce1655073c884fd97bdbb9f48e01/ruamel.ordereddict-0.4.13-cp27-cp27mu-manylinux1_x86_64.whl
Installing collected packages: ruamel.ordereddict, ruamel.yaml
  Found existing installation: ruamel.ordereddict 0.4.13
    Uninstalling ruamel.ordereddict-0.4.13:
      Successfully uninstalled ruamel.ordereddict-0.4.13
  Found existing installation: ruamel.yaml 0.15.55
    Uninstalling ruamel.yaml-0.15.55:
      Successfully uninstalled ruamel.yaml-0.15.55
Successfully installed ruamel.ordereddict-0.4.13 ruamel.yaml-0.15.57

I using Ubuntu 14.04.4 LTS (for various reasons I cannot upgrade).

Any suggestion will be greatly appreciated.

Anthon · Accepted Answer · 2018-08-17T08:49:52.207

PyBOMBS could not cope with recent changes in ruamel.yaml where CommentedMap and CommentedSeq were no longer subclasses of dict resp list but of the abstract baseclasses MutableMapping resp. MutableSequence (from collections.abc). PyBombs actually checked using isinstance() against dict resp. list.

Installing an older version of ruamel.yaml (anything <= 0.15.52) should work, you can do so with pip install 'ruamel.yaml<=0.15.52'

In the mean time a PR was submitted and merge to fix this issue, so make sure you run with the latest version of PyBOMBS checked out from github.

It is likely that your config.yml was truncated, so make sure you restore/regenerate that one.

Installing GNU Radio using PyBOMBS

1 Answers1