skip heavyweight plugins on termux

dot_config/nvim/init.lua

@@ -22,6 +22,7 @@ vim.keymap.set('n', '<C-L>', '<C-W><C-L>')
 vim.keymap.set('', '<C-c>', '"+y<CR>')
 
 -- coc.nvim - remap <cr> to make it confirm completion.
+if not vim.g.is_termux then
 	vim.keymap.set('i', '<cr>', function()
 		if vim.fn['coc#pum#visible']() == 1 then return vim.fn['coc#pum#confirm']() end
 		return '<cr>'
@@ -36,6 +37,7 @@ vim.keymap.set('i', '<S-Tab>', function()
 		if vim.fn['coc#pum#visible']() == 1 then return vim.fn['coc#pum#prev'](1) end
 		return '<S-Tab>'
 	end, { expr=true })
+end
 
 -- Code search? https://news.ycombinator.com/item?id=41739452
 vim.keymap.set('n', 'gv', '<c-w>v<cmd>lua vim.lsp.buf.definition()<CR>', opts)
@@ -53,6 +55,7 @@ vim.api.nvim_create_autocmd(
 )
 
 -- treesitter
+if not vim.g.is_termux then
 	require'nvim-treesitter.configs'.setup {
 	  highlight = {
 	    enable = true,
@@ -66,9 +69,12 @@ require'nvim-treesitter.configs'.setup {
 	    enable = true
 	  }
 	}
+end
 
 -- Install coc extensions
+if not vim.g.is_termux then
 	vim.g.coc_global_extensions = {'coc-json', 'coc-lua', 'coc-pyright', 'coc-rust-analyzer', 'coc-yaml', 'coc-eslint'}
+end
 
 -- Turn on nice things
 vim.opt.clipboard:append("unnamedplus")

dot_config/nvim/lua/plugins.lua

@@ -7,13 +7,23 @@ end
 -- Only required if you have packer configured as `opt`
 vim.cmd [[packadd packer.nvim]]
 
+-- Skip heavyweight plugins (LSP completion, treesitter) on resource-constrained
+-- environments like Termux, where they're slow/flaky to install and build and
+-- generally unnecessary for quick edits. Termux sets $TERMUX_VERSION natively.
+local is_termux = os.getenv('TERMUX_VERSION') ~= nil
+vim.g.is_termux = is_termux
+
 return require('packer').startup(function(use)
   -- Packer can manage itself
   use 'wbthomason/packer.nvim'
 
+  if not is_termux then
     -- LSP / COMPLETION --
     use {'neoclide/coc.nvim', branch = "release"}
 
+    use {'nvim-treesitter/nvim-treesitter', run = ':TSUpdate'}
+  end
+
   -- automatically adjust tab based on current file
   use 'tpope/vim-sleuth'
 
@@ -25,8 +35,6 @@ return require('packer').startup(function(use)
 
   use 'lukas-reineke/indent-blankline.nvim'
 
-  use {'nvim-treesitter/nvim-treesitter', run = ':TSUpdate'}
-
   -- Automatically set up your configuration after cloning packer.nvim
   -- Put this at the end after all plugins
   if packer_bootstrap then