this is my new neovim config after transitioning from ~/.vim

UltiSnips/c.snippets

@@ -0,0 +1,68 @@
+snippet main
+int
+main(int argc, char ** argv)
+{
+	$0
+	return 0;
+}
+endsnippet
+
+snippet GPL
+#
+# Copyright(c) $1
+#
+
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+$2
+endsnippet
+
+snippet AGPL
+#
+# Copyright(c) $1
+#
+
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+$2
+endsnippet
+
+snippet LGPL
+#
+# Copyright(c) $1
+#
+
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Lesser General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Lesser General Public License for more details.
+#
+#    You should have received a copy of the GNU Lesser General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+$2
+endsnippet

UltiSnips/python.snippets

@@ -0,0 +1,78 @@
+snippet main "Create the typical __main__ part"
+if __name__ == "__main__":
+	$0
+endsnippet
+
+snippet cls "Create a class skeleton"
+class $0(object):
+	def __init__(self):
+		pass
+endsnippet
+
+snippet pltimp
+import matplotlib.pyplot as plt
+endsnippet
+
+snippet shebang
+#!/usr/bin/env python3
+endsnippet
+
+snippet GPL
+#
+# Copyright(c) $1
+#
+
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+$2
+endsnippet
+
+snippet AGPL
+#
+# Copyright(c) $1
+#
+
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Affero General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Affero General Public License for more details.
+#
+#    You should have received a copy of the GNU Affero General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+$2
+endsnippet
+
+snippet LGPL
+#
+# Copyright(c) $1
+#
+
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Lesser General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    (at your option) any later version.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Lesser General Public License for more details.
+#
+#    You should have received a copy of the GNU Lesser General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+$2
+endsnippet

init.vim

@@ -0,0 +1,171 @@
+"===============================================================================
+"====================== NVIM Main Configuration File ===========================
+"===============================================================================
+
+
+
+"============================== General Setup ==================================
+"===============================================================================
+" This section contains seme stuff I just want in general.
+
+inoremap jk <Esc>
+" Automatic expansion of comments.
+set formatoptions=rqn1
+" Disable mouse.
+set mouse=""
+" Plain old cursor in every mode.
+set guicursor=
+
+" Don't use arrow keys unless in command mode.
+inoremap <Up> <Nop>
+inoremap <Down> <Nop>
+inoremap <Left> <Nop>
+inoremap <Right> <Nop>
+nnoremap <Up> <Nop>
+nnoremap <Down> <Nop>
+nnoremap <Left> <Nop>
+nnoremap <Right> <Nop>
+vnoremap <Up> <Nop>
+vnoremap <Down> <Nop>
+vnoremap <Left> <Nop>
+vnoremap <Right> <Nop>
+tnoremap <Up> <Nop> tnoremap <Down> <Nop>
+tnoremap <Left> <Nop>
+tnoremap <Right> <Nop>
+
+" Getting out of the terminal insert mode is extremely awkward.
+" This mapping solves that.
+tnoremap <Esc><Esc> <C-\><C-n>
+
+" Use UTF-8, because we don't live in 1783 anymore.
+set encoding=UTF-8
+
+" Why would everything remain highlighted all the time?
+set nohlsearch
+
+" Relative numbers are great.
+set number relativenumber
+
+"====================== Code Style Related Settings ============================
+"===============================================================================
+
+" This is basically Python's recommendation.
+set tabstop=4
+set softtabstop=0
+set shiftwidth=4
+set expandtab
+
+
+"===================== Filetype And Related Settings ===========================
+"===============================================================================
+" This section contains stuff that is related to file types.
+
+filetype plugin on
+
+set modeline
+set modelines=10
+
+
+"_______________________________________________________________________________
+"========================= Installing all Plugins ==============================
+"===============================================================================
+" For reasons this has to been done in a single step.
+
+call plug#begin('~/.vim/plugged')
+" This is for the LSP stuff.
+Plug 'neovim/nvim-lspconfig'
+Plug 'anott03/nvim-lspinstall'
+Plug 'nvim-lua/completion-nvim'
+
+" Inserting unicode characters.
+Plug 'chrisbra/unicode.vim'
+
+" Color schemes.
+Plug 'tomasr/molokai'
+Plug 'bluz71/vim-moonfly-colors'
+
+" This is for snippets.
+Plug 'SirVer/ultisnips'
+
+call plug#end()
+
+"===================== Language Server Configuration ===========================
+"===============================================================================
+" This section sets up the language server for the languages I use.
+
+" Run this to install pyls if you haven't yet.
+"LspInstall pyls
+"LspInstall bashls
+
+" Install ccls from snap or flatpack.
+lua << EOF
+
+local nvim_lsp = require('lspconfig')
+
+-- This basically enables autocompletion
+local on_attach = function(_, bufnr)
+    vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')
+    require'completion'.on_attach()
+end
+
+-- Enable the language servers.
+nvim_lsp.ccls.setup{on_attach=on_attach}
+nvim_lsp.vimls.setup{on_attach=on_attach}
+nvim_lsp.pyls.setup{on_attach=on_attach}
+nvim_lsp.bashls.setup{on_attach=on_attach}
+nvim_lsp.yamlls.setup{on_attach=on_attach}
+
+EOF
+
+
+" Highlight the problems in the code.
+highlight LspDiagnosticsDefaultError guifg=BrightRed
+highlight LspDiagnosticsDefaultWarning guifg=BrightYellow
+
+" This allows to jump to the definition, and
+" show some documentation respectively.
+nnoremap <silent> gd <cmd>lua vim.lsp.buf.definition()<CR>
+nnoremap <silent> gh <cmd>lua vim.lsp.buf.hover()<CR>
+
+" This part sets up lsp diagnostics.
+lua << EOF
+
+vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(
+    vim.lsp.diagnostic.on_publish_diagnostics, {
+    underline = true,
+    -- This sets the spacing and the prefix, obviously.
+    virtual_text = {
+        spacing = 4
+        , prefix = '🔙'
+        }
+    })
+
+EOF
+
+"========================= Settings For Autocompletion =========================
+"===============================================================================
+
+" This prevents vim from inserting random function heads,
+" and also gives some documentation preview.
+set completeopt=menuone,noinsert,noselect
+
+" This prevents the auto-completion from 
+" inserting the full method signature.
+let g:completion_enable_auto_signature = 0
+
+let g:completion_enable_snippet = 'UltiSnips'
+
+
+"========================== A Nice Color Scheme ================================
+"===============================================================================
+
+"set background=dark
+"let g:airline_theme='one'
+let $NVIM_TUI_ENABLE_TRUE_COLOR=1
+set termguicolors
+colorscheme molokai
+
+"=================== Settings Related to Highlighting ==========================
+"===============================================================================
+
+let g:vimsyn_embed= 'l'

init.vim.old

@@ -0,0 +1,3 @@
+set runtimepath^=~/.vim runtimepath+=~/.vim/after
+let &packpath = &runtimepath
+source ~/.vimrc