This package will need a few extra steps in order to function: https://github.com/neoclide/coc.nvim/wiki/Install-coc.nvim. There are several examples how to achieve that in overrides.nix.

@tobim Is it possible to specify the dependency of watchman as an option? It would allow people to override it when installing the vim package (but I have experience with options / configurations). Should that even be done? I can make the package batteries included.

I'm inclined to say "batteries included" is the way to go for this kind of plugin.

@tobim the build requires the pulling of some NPM packages, which it cannot do, because it's sandboxed (I'm on NixOS). I generated the npm dependencies for the project with node2nix but I'm not sure how to include them to the override.nix. Any idea?

Not my area of expertise, but a git grep through nixpkgs found /pkgs/misc/base16-builder which you might be able to copy from.

@tobim Thanks, that was useful, I've updated the override and the build. Now the packages are local and I've also included watchman to the mix. I don't know how to test the changes from the nixpkgs fork though, can you give it a shot?

I tried an ran into a few problems. I added the generated derivation to the buildInputs and changed the call to node2nix a bit:

node2nix -8 package.json --composition node.nix --node-env ./../../../../development/node-packages/node-env.nix

Building that fails however, because it tries to access a file that is in the source of coc:

npm ERR! path /nix/store/yq146kwp1kdpm6nq6g73adnf20frmmfj-node-coc.nvim-0.0.55/lib/node_modules/coc.nvim/bin/server.js
npm ERR! code ENOENT
npm ERR! errno -2
npm ERR! syscall chmod
npm ERR! enoent ENOENT: no such file or directory, chmod '/nix/store/yq146kwp1kdpm6nq6g73adnf20frmmfj-node-coc.nvim-0.0.55/lib/node_modules/coc.nvim/bin/server.js'
npm ERR! enoent This is related to npm not being able to find a file.
npm ERR! enoent

I think the approach needs to be changed to something similar to what LanguageClient-neovim does on overrides.nix: Do the entire definition of the plugin in overrides.nix. Look at tools/networking/airfield/default.nix for more inspiration.

@tobim I tried to get yarn to find the offline modules, but that fails. The airfield package is 4 years old and I'm not sure if what's there is still relevant. I don't know if the approach to wrapping a single binary works here. Do you want to take this over?

would be neat to have to test the neovim floating window system (as advertised on coc homepage):
https://user-images.githubusercontent.com/251450/52922829-23614e00-335f-11e9-8d33-3dae30ea4a9a.gif

Sorry for the silence from my side. I don't really have the time to do this right now, at least not in the next couple of weeks.

I thought it would be a nightmare to install but in fact reasonably little is required to get started (non declarative way). I've pushed the most basic plugin possible at #61796

It's not as good as nix integration but seems like setting let g:coc_global_extensions = ['coc-extension1', 'coc-extension2', 'coc-extension3', 'coc-extension4'] in the vimrc file will let coc.nvim autoinstall the extensions.

This pull request has been mentioned on Nix community. There might be relevant details there:

https://discourse.nixos.org/t/coc-nvim-nvim-stuff/2974/7

I'm back working on this, if anyone has any ideas how to integrate it, please share.

I'll close this for now and re-openen it when it's ready.

@ivegotasthma do you have by any chance coc-python working ? you seem to be one with the best coc understanding out there :)

@teto I don't :/ I'm a newb when it comes to nix expressions and this task seems too complex for my skill set. Anyone is welcome to take it over.

Sorry, I am a little bit confused, please help me clarify some question.

Do this have any relation with (supposedly working for anyone but me) vimPlugins.coc-nvim?
Which have been merged

But I can't make it to work correctly in nix-shell (details here and here)

Also there are couples of coc related vim plugins in vim-plugin-names

If I use one of those, do I still need to use coc-vim/coc-nvim?

coc-nvim works fine for me. I configure it as part of my neovim package https://github.com/rvolosatovs/infrastructure/blob/8b68427ff259299b94838aa89a2d1036f6d1e099/nixpkgs/neovim/config.nix#L81-L113

Regarding plugins it seems that some of them work and some don't(https://github.com/rvolosatovs/infrastructure/blob/8b68427ff259299b94838aa89a2d1036f6d1e099/nixpkgs/neovim/default.nix#L10-L15), but I honestly don't use them, as coc does everything I need it already. In case the plugins don't work for you when added declaratively I suppose you could just manage them impurely.