Hi Daniel, On 18/06/16 09:40, Daniel Pimentel wrote: >> * gnu/packages/python.scm (python2-qrcode): New variable. Thanks for the updated patch. In future would you mind sending the whole patch like as attached? It just makes things easier - thanks. I noticed that the sha256 did not change, so I changed the source field. But perhaps more problematically, I couldn't get the example in the README to work. Do you know if this is a problem with the library itself or the packing of it? $ ./pre-inst-env guix environment --pure --ad-hoc python2-qrcode python@2 ... $ python Python 2.7.10 (default, Jan 1 1970, 00:00:01) [GCC 4.9.3] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import qrcode >>> img = qrcode.make('Some data here') Traceback (most recent call last): File "", line 1, in File "/gnu/store/n205hrfqrc0mp1csbh44mxpm19hrggld-profile/lib/python2.7/site-packages/qrcode-5.3-py2.7.egg/qrcode/main.py", line 11, in make File "/gnu/store/n205hrfqrc0mp1csbh44mxpm19hrggld-profile/lib/python2.7/site-packages/qrcode-5.3-py2.7.egg/qrcode/main.py", line 271, in make_image File "/gnu/store/n205hrfqrc0mp1csbh44mxpm19hrggld-profile/lib/python2.7/site-packages/qrcode-5.3-py2.7.egg/qrcode/image/pil.py", line 8, in ImportError: No module named Image