Update install script to be more useful and README to match, move venv for pynvim to standard location and use pipx for installing LSP+formatters

.gitignore

@@ -3,3 +3,5 @@
 .python-version
 .DS_Store
 plugin/
+
+venv

README.md

@@ -5,19 +5,21 @@ Personal configuration and plugins for Vim
 ```bash
 curl -LO https://github.com/neovim/neovim/releases/latest/download/nvim.appimage
 chmod u+x nvim.appimage
-mv nvim.appimage "$HOME/bin/."
-ln -s "$HOME/bin/nvim.appimage" "$HOME/bin/nvim"  # Optional to avoid extension in commands
-# ./nvim.appimage
+mv nvim.appimage "$HOME/bin/nvim"
 ```
 
 ## Installing configuration
 ```bash
-git clone git@github.com:elitherl/vim-config.git $XDG_CONFIG_HOME/nvim
+git clone git@github.com:elitherl/vim-config.git ${XDG_CONFIG_HOME:-$HOME/.config}/nvim
 # or using symlink
 git clone git@github.com:elitherl/vim-config.git /path/to/directory
-ln -s /path/to/directory $XDG_CONFIG_HOME/nvim
+ln -s /path/to/directory ${XDG_CONFIG_HOME:-$HOME/.config}/nvim
 ```
 
+### Install script
+`install.sh` currently handles installing `Packer`, `pynvim`, `pipx` and currently configured language servers with formatters.
+Will also update existing installs if already present.
+
 ### Installing `Packer` plugin manager
 ```bash
 git clone --depth 1 https://github.com/wbthomason/packer.nvim\
@@ -26,15 +28,31 @@ git clone --depth 1 https://github.com/wbthomason/packer.nvim\
 Plugin definitions are in `plugins.lua`, inside `vim` run `:PackerSync` to install plugins
 
 ## Enabling python support
+Set up neovim specific virtual environment to install `pynvim` package:
 ```bash
-pyenv virtualenv neovim3  # Assumes working pyenv
-pyenv activate neovim3
-pip install -U pip setuptools wheel
-pip install -U pynvim pyright fortl  # If pyright not available, fallback to: "python-lsp-server[all]" pylsp-mypy
-pyenv deactivate
+python3 -m venv "${XDG_CONFIG_HOME:-$HOME/.config}/nvim/venv"
+source "${XDG_CONFIG_HOME:-$HOME/.config}/nvim/venv/bin/activate"
+pip install -U pip setuptools wheel && pip install -U pynvim
+source deactivate
 ```
 
-From [vim documentation](https://neovim.io/doc/user/nvim.html#nvim-from-vim)
+### Installing language servers using `pipx`
+Install [pipx](https://pypa.github.io/pipx/) in chosen manner, e.g. as given in documentation:
+
+```bash
+python3 -m pip install --user pipx
+python3 -m pipx ensurepath
+```
+
+For currently configured language servers and formatters run:
+
+```bash
+pipx install pyright
+pipx install fortls
+pipx install black
+pipx install isort
+pipx install zimports
+```
 
 ## Add LUA language server
 Follow instructions from [sumneko/lua-language-server GitHub](https://github.com/sumneko/lua-language-server/wiki/Getting-Started#command-line).

install.sh

@@ -5,3 +5,16 @@ PACKER_DIR="$HOME/.local/share/nvim/site/pack/packer/start/packer.nvim"
 if [ ! -d $PACKER_DIR ]; then
   git clone --depth 1 https://github.com/wbthomason/packer.nvim $PACKER_DIR
 fi
+
+NVIM_DIR=$(dirname $(readlink -f $0))
+python3 -m venv "$NVIM_DIR/venv"
+$NVIM_DIR/venv/bin/python -m pip install -U pip setuptools wheel || exit 1
+$NVIM_DIR/venv/bin/python -m pip install -U pynvim
+
+python3 -m pip install -U --user pipx || exit 1
+python3 -m pipx ensurepath || exit 1
+python3 -m pipx install pyright
+python3 -m pipx install fortls
+python3 -m pipx install black
+python3 -m pipx install isort
+python3 -m pipx install zimports

lua/config_plugins/config_lsp.lua

@@ -121,37 +121,11 @@ cmp.setup.cmdline(':', {
 -- Setup lspconfig.
 local capabilities = require('cmp_nvim_lsp').default_capabilities(vim.lsp.protocol.make_client_capabilities())
 
-local function file_exists(name)
-    local f = io.open(name, "r")
-    if f ~= nil then io.close(f) return true else return false end
-end
-
-local pyright_file = os.getenv("HOME") .. "/.pyenv/versions/neovim3/bin/pyright-langserver"
-local pylsp_file = os.getenv("HOME") .. "/.pyenv/versions/neovim3/bin/pylsp"
-
-if file_exists(pyright_file) then
-    require('lspconfig')['pyright'].setup {
-        cmd = { pyright_file, "--stdio" },
-        on_attach = on_attach,
-        flags = lsp_flags,
-        capabilities = capabilities,
-    }
-elseif file_exists(pylsp_file) then
-    require('lspconfig')['pylsp'].setup {
-        cmd = { pylsp_file },
-        on_attach = on_attach,
-        flags = lsp_flags,
-        settings = {
-            pylsp = {
-                plugins = {
-                    pycodestyle = { maxLineLength = 88 },
-                    flake8 = { maxLineLength = 88 }
-                }
-            }
-        },
-        capabilities = capabilities
-    }
-end
+require('lspconfig')['pyright'].setup {
+    on_attach = on_attach,
+    flags = lsp_flags,
+    capabilities = capabilities,
+}
 
 require('lspconfig')['efm'].setup {
     init_options = { documentFormatting = true },
@@ -171,7 +145,6 @@ require('lspconfig')['efm'].setup {
 }
 
 require('lspconfig')['fortls'].setup {
-    cmd = { os.getenv("HOME") .. "/.pyenv/versions/neovim3/bin/fortls" },
     on_attach = on_attach,
     flags = lsp_flags,
     capabilities = capabilities

lua/options.lua

@@ -1,4 +1,4 @@
-vim.g.python3_host_prog = '~/.pyenv/versions/neovim3/bin/python'
+vim.g.python3_host_prog = '~/.config/nvim/venv/bin/python'
 vim.g.python_indent = {
     open_paren = 'shiftwidth()',
     nested_paren = 'shiftwidth()',