gistfile1.txt

$ nix-env -iA nixos.nixops --show-trace                                                                                                          
installing 'nixops-1.6.1'
error: while evaluating the attribute 'drvPath' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/customisation.nix:149:7:
while evaluating the attribute 'buildInputs' of the derivation 'nixops-1.6.1' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/development/interpreters/python/mk-python-derivation.nix:73:3:
while evaluating the attribute 'out.outPath' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/customisation.nix:142:13:
while evaluating the attribute 'propagatedBuildInputs' of the derivation 'python2.7-azure-mgmt-compute-0.20.1' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/development/interpreters/python/mk-python-derivation.nix:73:3:
while evaluating the attribute 'out.outPath' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/customisation.nix:142:13:
while evaluating the attribute 'propagatedBuildInputs' of the derivation 'python2.7-azure-mgmt-common-0.20.0' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/development/interpreters/python/mk-python-derivation.nix:73:3:
while evaluating the attribute 'out.outPath' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/customisation.nix:142:13:
while evaluating the attribute 'propagatedBuildInputs' of the derivation 'python2.7-msrestazure-0.6.0' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/development/interpreters/python/mk-python-derivation.nix:73:3:
while evaluating the attribute 'out.outPath' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/customisation.nix:142:13:
while evaluating the attribute 'propagatedBuildInputs' of the derivation 'python2.7-msrest-0.6.4' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/development/interpreters/python/mk-python-derivation.nix:73:3:
while evaluating 'getOutput' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/attrsets.nix:464:23, called from undefined position:
while evaluating anonymous function at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/stdenv/generic/make-derivation.nix:148:17, called from undefined position:
while evaluating 'callPackageWith' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/customisation.nix:108:35, called from /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/top-level/python-packages.nix:925:13:
while evaluating 'makeOverridable' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/customisation.nix:67:24, called from /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/customisation.nix:112:8:
while evaluating anonymous function at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/development/python-modules/aiohttp/default.nix:1:1, called from /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/customisation.nix:69:12:
while evaluating 'makeOverridablePythonPackage' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/top-level/python-packages.nix:31:37, called from /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/development/python-modules/aiohttp/default.nix:24:1:
while evaluating 'makeOverridable' at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/customisation.nix:67:24, called from /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/top-level/python-packages.nix:33:12:
while evaluating anonymous function at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/development/interpreters/python/build-python-package.nix:30:1, called from /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/lib/customisation.nix:69:12:
while evaluating anonymous function at /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/development/interpreters/python/mk-python-derivation.nix:17:1, called from /nix/store/58fxsm3046xypmvshhxb9mvysqizaihy-nixos-19.09pre173166.373488e6f4c/nixos/pkgs/development/interpreters/python/build-python-package.nix:48:4:
aiohttp-3.5.4 not supported for interpreter python2.7