vimPlugins.plenary: init from lua package

This commit shows how to convert luarocks packages into (neo)vim ones.
The advantage for neovim lua plugins to register their rockspec (aka
package definition) is that the plugin can express its dependencies and
a few metadata through it.

maintainers/scripts/luarocks-packages.csv

@@ -1,4 +1,4 @@
-# nix name, luarocks name, server, version,luaversion,maintainers
+# nix name,luarocks name,server,version,luaversion,maintainers
 alt-getopt,,,,,arobyn
 ansicolors,,,,,
 argparse,,,,,
@@ -16,6 +16,7 @@ cyrussasl,,,,,
 digestif,,,,lua5_3,
 dkjson,,,,,
 fifo,,,,,
+gitsigns.nvim,,,,lua5_1,
 http,,,,,vcunat
 inspect,,,,,
 ldbus,,http://luarocks.org/dev,,,

pkgs/misc/vim-plugins/default.nix

@@ -1,13 +1,21 @@
 # TODO check that no license information gets lost
-{ callPackage, config, lib, vimUtils, vim, darwin, llvmPackages }:
+{ callPackage, config, lib, vimUtils, vim, darwin, llvmPackages, luaPackages }:
 
 let
 
   inherit (vimUtils.override {inherit vim;}) buildVimPluginFrom2Nix;
 
   inherit (lib) extends;
 
-  initialPackages = self: {};
+  initialPackages = self: {
+    # Convert derivation to a vim plugin.
+    toVimPlugin = drv:
+      drv.overrideAttrs(oldAttrs: {
+        passthru = (oldAttrs.passthru or {}) // {
+          vimPlugin = true;
+        };
+      });
+  };
 
   plugins = callPackage ./generated.nix {
     inherit buildVimPluginFrom2Nix;
@@ -22,7 +30,7 @@ let
   overrides = callPackage ./overrides.nix {
     inherit (darwin.apple_sdk.frameworks) Cocoa CoreFoundation CoreServices;
     inherit buildVimPluginFrom2Nix;
-    inherit llvmPackages;
+    inherit llvmPackages luaPackages;
   };
 
   aliases = if (config.allowAliases or true) then (import ./aliases.nix lib) else final: prev: {};

pkgs/misc/vim-plugins/overrides.nix

@@ -86,6 +86,8 @@
 , iferr
 , impl
 , reftools
+# must be lua51Packages
+, luaPackages
 }:
 
 self: super: {
@@ -282,6 +284,8 @@ self: super: {
     dependencies = with self; [ plenary-nvim ];
   });
 
+  plenary-nvim = super.toVimPlugin(luaPackages.plenary-nvim);
+
   gruvbox-nvim = super.gruvbox-nvim.overrideAttrs (old: {
     dependencies = with self; [ lush-nvim ];
   });

pkgs/misc/vim-plugins/vim-utils.nix

@@ -2,6 +2,7 @@
 { lib, stdenv, vim, vimPlugins, vim_configurable, buildEnv, writeText, writeScriptBin
 , nix-prefetch-hg, nix-prefetch-git
 , fetchFromGitHub, runtimeShell
+, hasLuaModule
 }:
 
 /*
@@ -186,7 +187,21 @@ let
 
   nativeImpl = packages:
   (let
-    link = (packageName: dir: pluginPath: "ln -sf ${pluginPath}/share/vim-plugins/* $out/pack/${packageName}/${dir}");
+    # dir is "start" or "opt"
+    linkLuaPlugin = plugin: packageName: dir: ''
+      mkdir -p $out/pack/${packageName}/${dir}/${plugin.pname}/lua
+      ln -sf ${plugin}/share/lua/5.1/* $out/pack/${packageName}/${dir}/${plugin.pname}/lua
+      ln -sf ${plugin}/${plugin.pname}-${plugin.version}-rocks/${plugin.pname}/${plugin.version}/* $out/pack/${packageName}/${dir}/${plugin.pname}/
+    '';
+
+    linkVimlPlugin = pluginPath: packageName: dir:
+      "ln -sf ${pluginPath}/${rtpPath}/* $out/pack/${packageName}/${dir}";
+
+      # (builtins.trace pluginPath )
+      link = pluginPath: if hasLuaModule pluginPath
+        then linkLuaPlugin pluginPath
+        else linkVimlPlugin pluginPath;
+
     packageLinks = (packageName: {start ? [], opt ? []}:
     let
       # `nativeImpl` expects packages to be derivations, not strings (as
@@ -199,9 +214,9 @@ let
       [ "mkdir -p $out/pack/${packageName}/start" ]
       # To avoid confusion, even dependencies of optional plugins are added
       # to `start` (except if they are explicitly listed as optional plugins).
-      ++ (builtins.map (link packageName "start") (lib.unique (startWithDeps ++ depsOfOptionalPlugins)))
+      ++ (builtins.map (x: link x packageName "start") (lib.unique (startWithDeps ++ depsOfOptionalPlugins)))
       ++ ["mkdir -p $out/pack/${packageName}/opt"]
-      ++ (builtins.map (link packageName "opt") opt)
+      ++ (builtins.map (x: link x packageName "opt") opt)
     );
     packDir = (packages:
       stdenv.mkDerivation {
@@ -217,6 +232,18 @@ let
     set runtimepath^=${packDir packages}
   '');
 
+  /* Generates a vimrc string
+
+    packages is an attrset with {name: { start = [ vim derivations ]; opt = [ vim derivations ]; }
+    Example:
+      vimrcContent {
+
+        packages = { home-manager = { start = [vimPlugins.vim-fugitive]; opt = [];};
+        beforePlugins = '';
+        customRc = ''let mapleader = " "'';
+
+      };
+   */
   vimrcContent = {
     packages ? null,
     vam ? null,

pkgs/top-level/all-packages.nix

@@ -32195,10 +32195,14 @@ with pkgs;
 
   viewnior = callPackage ../applications/graphics/viewnior { };
 
-  vimUtils = callPackage ../misc/vim-plugins/vim-utils.nix { };
+
+  vimUtils = callPackage ../misc/vim-plugins/vim-utils.nix {
+    inherit (lua51Packages) hasLuaModule;
+  };
 
   vimPlugins = recurseIntoAttrs (callPackage ../misc/vim-plugins {
     llvmPackages = llvmPackages_6;
+    luaPackages = lua51Packages;
   });
 
   vimb-unwrapped = callPackage ../applications/networking/browsers/vimb { };

pkgs/top-level/lua-packages.nix

@@ -83,7 +83,7 @@ with self; {
   };
 
 
-  inherit toLuaModule lua-setup-hook;
+  inherit toLuaModule hasLuaModule lua-setup-hook;
   inherit buildLuarocksPackage buildLuaApplication;
   inherit requiredLuaModules luaOlder luaAtLeast
     isLua51 isLua52 isLua53 isLuaJIT lua callPackage;