gistfile1.txt

[grahamc@Petunia:~/projects/github.com/NixOS/nix]$ nix-shell -p python3
these paths will be fetched (0.05 MiB download, 0.28 MiB unpacked):
  /nix/store/m57p0m5m6fz7j58g1bamsrxq5prsgpl2-bash-interactive-4.4-p23-dev
copying path '/nix/store/m57p0m5m6fz7j58g1bamsrxq5prsgpl2-bash-interactive-4.4-p23-dev' from 'https://cache.nixos.org'...

[nix-shell:~/projects/github.com/NixOS/nix]$ python3 -m http.server
Fatal Python error: initsite: Failed to import the site module
Traceback (most recent call last):
  File "/nix/store/qpiaa6iwqqq7g471mq7bh1np5wz71pzf-python2.7-setuptools-40.2.0/lib/python2.7/site-packages/site.py", line 73, in <module>
    __boot()
  File "/nix/store/qpiaa6iwqqq7g471mq7bh1np5wz71pzf-python2.7-setuptools-40.2.0/lib/python2.7/site-packages/site.py", line 26, in __boot
    import imp  # Avoid import loop in Python 3
  File "/nix/store/dwi186iqm6p3kfncfsl62fbfwfry1yci-python3-3.7.3/lib/python3.7/imp.py", line 27, in <module>
    import tokenize
  File "/nix/store/dwi186iqm6p3kfncfsl62fbfwfry1yci-python3-3.7.3/lib/python3.7/tokenize.py", line 33, in <module>
    import re
  File "/nix/store/dwi186iqm6p3kfncfsl62fbfwfry1yci-python3-3.7.3/lib/python3.7/re.py", line 143, in <module>
    class RegexFlag(enum.IntFlag):
AttributeError: module 'enum' has no attribute 'IntFlag'