Fix vimPlugins

[tailhook]

Seems to be simply a typo or similar

[domenkozar]

Do we want prebuilt vim plugins?

[tailhook]

I don't think they need to be pre-built. But installing with nix-env would be nice.

[domenkozar]

@tailhook did you test that installing them via nix-env works?

[tailhook]

Yes.
However, to enable you need to to add set tsp+=... as described in vim-plugins/default.nix. I believe this step may be fixed as well, but it may be ok to leave it as is.

[bjornfor]

Having vim-plugins from nix-env or environment.systemPackages automatically picked up would be nice :-) (And for reference, the setting is called "rtp", not "tsp".)

[tailhook]

I see basically three ways to achieve automatic installation:

1. Adding the following to config:

set rtp+=~/.nix-profile/vim-plugins/*

Unfortunately command-t plugin doesn't work in this case (I'm not sure why it fails, others work)

1. Compose a vimrc by adding a line with set rtp+= for each plugin. IIUC this means that plugins would be enabled in config not just installing them using nix-env
2. Install each package not in vim-plugins/<plugin_name> but directly into vim-plugins like all other distributions do AFAIK (I mean they use shared directory for all plugins)

[tailhook]

Hm, the last option doesn't work. Because all plugins have doc/tags folder.

Anyway I think the best solution so far is adding:

      ensureDir $out/vim-plugins/plugin                                         
      echo "set runtimepath^=$out/vim-plugins/${path}" > $out/vim-plugins/plugin/${path}.vim

to installPhase. I.e. it adds <profile>/vim-plugins/plugin/<pluginname>.vim file which is loaded by vim automatically and that file adds real path to a plugin into a runtimepath (same as rtp)

It works perfectly for nix-env. However, it doesn't work for systemPackages because vim-plugins directory is not symlinked into /run/current-system/sw/

Thoughts?

[tailhook]

I'll make a better pull request soon