vimPlugins.markdown-preview-nvim: fix node dependencies

pkgs/development/node-packages/node-packages.json

@@ -174,6 +174,7 @@
 , "madoko"
 , "markdownlint-cli"
 , "markdown-link-check"
+, {"markdown-preview-nvim": "../../misc/vim-plugins/markdown-preview-nvim"}
 , "mastodon-bot"
 , "mathjax"
 , "meat"

pkgs/misc/vim-plugins/markdown-preview-nvim/fix-node-paths.patch

@@ -0,0 +1,46 @@
+diff --git a/autoload/health/mkdp.vim b/autoload/health/mkdp.vim
+index 9eebb56..0700333 100644
+--- a/autoload/health/mkdp.vim
++++ b/autoload/health/mkdp.vim
+@@ -9,8 +9,8 @@ function! health#mkdp#check() abort
+     call health#report_info('Pre build: ' . l:mkdp_server_script)
+     call health#report_info('Pre build version: ' . mkdp#util#pre_build_version())
+     call health#report_ok('Using pre build')
+-  elseif executable('node')
+-    call health#report_info('Node version: ' . system('node --version'))
++  elseif executable('@node@')
++    call health#report_info('Node version: ' . system('@node@ --version'))
+     let l:mkdp_server_script = s:mkdp_root_dir . '/app/server.js'
+     call health#report_info('Script: ' . l:mkdp_server_script)
+     call health#report_info('Script exists: ' . filereadable(l:mkdp_server_script))
+diff --git a/autoload/mkdp/nvim/rpc.vim b/autoload/mkdp/nvim/rpc.vim
+index 5abd807..db1067b 100644
+--- a/autoload/mkdp/nvim/rpc.vim
++++ b/autoload/mkdp/nvim/rpc.vim
+@@ -53,8 +53,8 @@ function! mkdp#nvim#rpc#get_command() abort
+   let l:pre_build = s:root_dir . '/app/bin/markdown-preview-' . mkdp#util#get_platform()
+   if executable(l:pre_build)
+     let l:cmd = [l:pre_build, '--path', s:script]
+-  elseif executable('node')
+-    let l:cmd = ['node', s:root_dir . '/app/index.js', '--path', s:script]
++  elseif executable('@node@')
++    let l:cmd = ['@node@', s:root_dir . '/app/index.js', '--path', s:script]
+   endif
+   if !exists('l:cmd')
+     echohl Error | echon '[vim-node-rpc] pre build and node not found!' | echohl None
+diff --git a/autoload/mkdp/rpc.vim b/autoload/mkdp/rpc.vim
+index a3361ec..d42f7a6 100644
+--- a/autoload/mkdp/rpc.vim
++++ b/autoload/mkdp/rpc.vim
+@@ -59,9 +59,9 @@ function! mkdp#rpc#start_server() abort
+   let l:mkdp_server_script = s:mkdp_root_dir . '/app/bin/markdown-preview-' . mkdp#util#get_platform()
+   if executable(l:mkdp_server_script)
+     let l:cmd = [l:mkdp_server_script, '--path', s:mkdp_root_dir . '/app/server.js']
+-  elseif executable('node')
++  elseif executable('@node@')
+     let l:mkdp_server_script = s:mkdp_root_dir . '/app/index.js'
+-    let l:cmd = ['node', l:mkdp_server_script, '--path', s:mkdp_root_dir . '/app/server.js']
++    let l:cmd = ['@node@', l:mkdp_server_script, '--path', s:mkdp_root_dir . '/app/server.js']
+   endif
+   if exists('l:cmd')
+     if s:is_vim

pkgs/misc/vim-plugins/markdown-preview-nvim/package.json

@@ -0,0 +1,17 @@
+{
+  "name": "markdown-preview-vim",
+  "version": "0.0.1",
+  "description": "markdown preview plugin for (neo)vim",
+  "bin": "./index.js",
+  "repository": "https://github.com/iamcco/markdown-preview.vim.git",
+  "author": "年糕小豆汤 <ooiss@qq.com>",
+  "license": "MIT",
+  "private": true,
+  "dependencies": {
+    "log4js": "3.0.6",
+    "neovim": "4.2.1",
+    "socket.io": "2.1.1",
+    "tslib": "1.9.3",
+    "vim-node-rpc": "0.1.24"
+  }
+}

pkgs/misc/vim-plugins/overrides.nix

@@ -36,6 +36,7 @@
 , which
 , xkb-switch
 , ycmd
+, nodejs
 
 # test dependencies
 , neovim-unwrapped
@@ -382,6 +383,30 @@ self: super: {
     dependencies = with self; [ plenary-nvim ];
   });
 
+  markdown-preview-nvim = super.markdown-preview-nvim.overrideAttrs (old: let
+    # We only need its dependencies `node-modules`.
+    nodeDep = nodePackages."markdown-preview-nvim-../../misc/vim-plugins/markdown-preview-nvim".overrideAttrs (old: {
+      dontNpmInstall = true;
+    });
+  in {
+    patches = [
+      (substituteAll {
+        src = ./markdown-preview-nvim/fix-node-paths.patch;
+        node = "${nodejs}/bin/node";
+      })
+    ];
+    postInstall = ''
+      # The node package name is `*-vim` not `*-nvim`.
+      ln -s ${nodeDep}/lib/node_modules/markdown-preview-vim/node_modules $out/app
+    '';
+
+    nativeBuildInputs = [ nodejs ];
+    doInstallCheck = true;
+    installCheckPhase = ''
+      node $out/app/index.js --version
+    '';
+  });
+
   meson = buildVimPluginFrom2Nix {
     inherit (meson) pname version src;
     preInstall = "cd data/syntax-highlighting/vim";