Unable to install on NixOS: Nix plugin missing

[TheDevMinerTV]

I got the following error when trying to use the NixOS instructions from the README.

error: builder for '/nix/store/7p77k6icpc4q60vb1zkyma3s1xcdjbn5-nix.conf.drv' failed with exit code 1;                                                                                                                                                       
       last 2 log lines:                                                                                                                                                                                                                                     
       > Validating generated nix.conf                                                                                                                                                                                                                       
       > error: filesystem error: directory iterator cannot open directory: No such file or directory [/nix/store/h4p6bwi6nxsv3piln0ad1bp2nh4cw9qy-nix-doc-0.6.5/lib/libnix_doc_plugin.so]                                                                   
       For full logs, run 'nix log /nix/store/7p77k6icpc4q60vb1zkyma3s1xcdjbn5-nix.conf.drv'.                                                                                                                                                                

/nix/store/h4p6bwi6nxsv3piln0ad1bp2nh4cw9qy-nix-doc-0.6.5 does not contain the NixOS plugin (no lib folder at all, in fact).

❯ ls $(nix-build '<nixpkgs>' -A nix-doc)
bin

[lf-]

this is because the plugin is obsolete! lix includes :doc that works on lambdas and this forced cppnix to implement it as well, eventually. so you simply don't need that functionality.

it's true that the readme needs updating.