switch vim flavour to Neovim; reason: macOS clipboard support

access to system clipboard was broken in command-line vim, the buffers
"+ or "* were said not to exist and neither unnamed or unnamedplus
clipboard settings were working.

Aliases nvim to "vim"

home/home.nix

@@ -446,8 +446,9 @@ in
       ipb = "ip --color --brief";
       ll = "ls -l";
       wavesynth = "nix-shell -p sox --run 'play -n synth brownnoise synth pinknoise mix synth 0 0 0 15 40 80 trapezium amod 0.2 20'";
+      vim = "nvim";
     };
     home.sessionVariables = {
-      EDITOR = "vim";
+      EDITOR = "nvim";
     };
 }

home/overlays.nix

@@ -4,10 +4,8 @@
     self: super:
       rec {
         #jami-ring-daemon = super.qt5.callPackage ./ov/jami/ring-daemon.nix {};
-        myVim = with super; vim_configurable.customize {
+        myVim = with super; neovim.override { configure = {
-          # executable/ package name
+          packages.myVimPackage = with pkgs.vimPlugins; {
-          name = "vim";
-          vimrcConfig.packages.myVimPackage = with pkgs.vimPlugins; {
             # loaded on start
             start = [
               ale
@@ -27,121 +25,8 @@
               vim-jinja
             ];
           };
-          vimrcConfig.customRC = ''
+          customRC = builtins.readFile ./vimrc;
-            " disable vim modelines for security reasons
+        };};
-            set modelines=0
-            set nomodeline
-
-            " Uncomment the following to have Vim jump to the last position when
-            " reopening a file
-            if has("autocmd")
-              au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif
-            endif
-
-            set nocompatible
-            set hidden
-
-            " automatically close preview window after suggestion
-            autocmd CompleteDone * pclose
-
-            " Pathogen
-            "execute pathogen#infect()
-            "call pathogen#infect()
-            "call pathogen#helptags()
-
-            set statusline=%<\ %n:%f\ %m%r%y%=%-35.(line:\ %l\ of\ %L,\ col:\ %c%V\ (%P)%)
-            filetype plugin indent on
-             
-            syntax on
-
-            set number
-            set mouse=a
-            set mousehide
-
-            set backspace=indent,eol,start
-
-            set hlsearch
-            set showmatch
-            set incsearch
-            set autoindent
-            set history=1000
-            " set cursorline
-            if has("unnamedplus")
-              set clipboard=unnamedplus
-            elseif has("clipboard")
-              set clipboard=unnamed
-            endif
-
-            " set expandtab
-            set shiftwidth=4
-            set tabstop=4
-            set softtabstop=4
-
-            " enable truecolor support
-            "let &t_8f = "\<Esc>[38;2;%lu;%lu;%lum"
-            "let &t_8b = "\<Esc>[48;2;%lu;%lu;%lum"
-            "set termguicolors
-            "
-            "let base16colorspace=256
-
-            "colorscheme base16-tomorrow-night
-            "colorscheme Tomorrow-Night
-            "colorscheme base16-default-dark
-
-            set background=dark
-
-            " Use the same symbols as TextMate for tabstops and EOLs
-            set listchars=tab:▸\ ,eol:¬
-
-            " default tab completion with supertab
-            let g:SuperTabDefaultCompletionType = "context"
-
-
-            " LanguageClient
-            " Required for operations modifying multiple buffers like rename.
-            set hidden
-            nnoremap <F5> :call LanguageClient_contextMenu()<CR>
-            let g:LanguageClient_serverCommands = { 'haskell': ['hie-wrapper', '--lsp'] }
-
-            " enable LanguageClient functions only if a server mapping exists
-            function LC_maps()
-              if has_key(g:LanguageClient_serverCommands, &filetype)
-                nnoremap <buffer> <silent> K :call LanguageClient#textDocument_hover()<cr>
-                nnoremap <buffer> <silent> gd :call LanguageClient#textDocument_definition()<CR>
-                nnoremap <buffer> <silent> <F2> :call LanguageClient#textDocument_rename()<CR>
-              set omnifunc=LanguageClient#complete
-              set completefunc=LanguageClient#complete
-              endif
-            endfunction
-
-            autocmd FileType * call LC_maps()
-
-            au FileType python setlocal tabstop=4 expandtab shiftwidth=4 softtabstop=4
-            au FileType haskell setlocal expandtab tabstop=4 shiftwidth=4 softtabstop=4
-            " haskell-vim
-            let g:haskell_enable_quantification = 1   " to enable highlighting of `forall`
-            let g:haskell_enable_recursivedo = 1      " to enable highlighting of `mdo` and `rec`
-            let g:haskell_enable_arrowsyntax = 1      " to enable highlighting of `proc`
-            let g:haskell_enable_pattern_synonyms = 1 " to enable highlighting of `pattern`
-            let g:haskell_enable_typeroles = 1        " to enable highlighting of type roles
-            let g:haskell_enable_static_pointers = 1  " to enable highlighting of `static`
-            let g:haskell_backpack = 1                " to enable highlighting of backpack keywords
-            au FileType markdown setlocal tabstop=4 expandtab shiftwidth=4 softtabstop=4
-            au FileType nix setlocal tabstop=2 expandtab shiftwidth=2 softtabstop=2
-            set ofu=syntaxcomplete#Complete
-            " nmap <C-V> "+gP
-            " imap <C-V> <ESC><C-V>a
-            vmap <C-C> "+y 
-
-            " ALE linter settings
-            let g:ale_linters = { 'python': ['flake8'] }
-
-            " vim-pandoc settings
-            let g:pandoc#modules#disabled = ["spell"]
-            set textwidth=0
-            set wrapmargin=0
-      '';
-        };
         # build with debug symbols and in debug mode (less optimized)
         opencvDebug = with super; enableDebugging ((opencv3.override { enablePython = true; enableGtk3 = true; enableDocs = true; pythonPackages = pkgs.python3Packages; }).overrideAttrs (oldAttrs: rec { cmakeBuildType = "Debug"; }));
         #gnutls = super.callPackage ./ov/gnutls {inherit (super.darwin.apple_sdk.frameworks) Security;};

home/vimrc

@@ -0,0 +1,109 @@
+" disable vim modelines for security reasons
+set modelines=0
+set nomodeline
+
+" Uncomment the following to have Vim jump to the last position when
+" reopening a file
+if has("autocmd")
+  au BufReadPost * if line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif
+endif
+
+set nocompatible
+set hidden
+
+" automatically close preview window after suggestion
+autocmd CompleteDone * pclose
+
+" Pathogen
+"execute pathogen#infect()
+"call pathogen#infect()
+"call pathogen#helptags()
+
+set statusline=%<\ %n:%f\ %m%r%y%=%-35.(line:\ %l\ of\ %L,\ col:\ %c%V\ (%P)%)
+filetype plugin indent on
+ 
+syntax on
+
+set number
+set mouse=a
+set mousehide
+
+set backspace=indent,eol,start
+
+set hlsearch
+set showmatch
+set incsearch
+set autoindent
+set history=1000
+" set cursorline
+" use system clipboard as default buffer
+set clipboard=unnamed
+
+" set expandtab
+set shiftwidth=4
+set tabstop=4
+set softtabstop=4
+
+" enable truecolor support
+"let &t_8f = "\<Esc>[38;2;%lu;%lu;%lum"
+"let &t_8b = "\<Esc>[48;2;%lu;%lu;%lum"
+"set termguicolors
+"
+"let base16colorspace=256
+
+"colorscheme base16-tomorrow-night
+"colorscheme Tomorrow-Night
+"colorscheme base16-default-dark
+
+set background=dark
+
+" Use the same symbols as TextMate for tabstops and EOLs
+set listchars=tab:▸\ ,eol:¬
+
+" default tab completion with supertab
+let g:SuperTabDefaultCompletionType = "context"
+
+
+" LanguageClient
+" Required for operations modifying multiple buffers like rename.
+set hidden
+nnoremap <F5> :call LanguageClient_contextMenu()<CR>
+let g:LanguageClient_serverCommands = { 'haskell': ['hie-wrapper', '--lsp'] }
+
+" enable LanguageClient functions only if a server mapping exists
+function LC_maps()
+  if has_key(g:LanguageClient_serverCommands, &filetype)
+    nnoremap <buffer> <silent> K :call LanguageClient#textDocument_hover()<cr>
+    nnoremap <buffer> <silent> gd :call LanguageClient#textDocument_definition()<CR>
+    nnoremap <buffer> <silent> <F2> :call LanguageClient#textDocument_rename()<CR>
+  set omnifunc=LanguageClient#complete
+  set completefunc=LanguageClient#complete
+  endif
+endfunction
+
+autocmd FileType * call LC_maps()
+
+au FileType python setlocal tabstop=4 expandtab shiftwidth=4 softtabstop=4
+au FileType haskell setlocal expandtab tabstop=4 shiftwidth=4 softtabstop=4
+" haskell-vim
+let g:haskell_enable_quantification = 1   " to enable highlighting of `forall`
+let g:haskell_enable_recursivedo = 1      " to enable highlighting of `mdo` and `rec`
+let g:haskell_enable_arrowsyntax = 1      " to enable highlighting of `proc`
+let g:haskell_enable_pattern_synonyms = 1 " to enable highlighting of `pattern`
+let g:haskell_enable_typeroles = 1        " to enable highlighting of type roles
+let g:haskell_enable_static_pointers = 1  " to enable highlighting of `static`
+let g:haskell_backpack = 1                " to enable highlighting of backpack keywords
+au FileType markdown setlocal tabstop=4 expandtab shiftwidth=4 softtabstop=4
+au FileType nix setlocal tabstop=2 expandtab shiftwidth=2 softtabstop=2
+set ofu=syntaxcomplete#Complete
+" nmap <C-V> "+gP
+" imap <C-V> <ESC><C-V>a
+"vmap <C-C> "+y 
+
+" ALE linter settings
+let g:ale_linters = { 'python': ['flake8'] }
+
+" vim-pandoc settings
+let g:pandoc#modules#disabled = ["spell"]
+set textwidth=0
+set wrapmargin=0