skip heavyweight plugins on termux

dot_config/nvim/lua/plugins.lua

@@ -7,12 +7,22 @@ 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'
 
-  -- LSP / COMPLETION --
-  use {'neoclide/coc.nvim', branch = "release"}
+  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