nvim: after/ftplugin/rust: Set compiler and makeprg

We pick up the compiler cargo file from rust.vim as the errorformat
seems better perhaps to consider a few more things compared to the one
included in neovim.

nvim/.config/nvim/after/ftplugin/rust.vim

@@ -1,3 +1,6 @@
+compiler cargo
+setlocal makeprg=cargo\ build\ --all
+
 nnoremap <buffer> <Leader>rD :RustDisableInlayHints<CR>
 nnoremap <buffer> <Leader>rt :RustToggleInlayHints<CR>
 nnoremap <buffer> <Leader>rr :RustRunnables<CR>

nvim/.config/nvim/compiler/cargo.vim

@@ -0,0 +1,43 @@
+" Vim compiler file
+" Compiler:         Cargo Compiler
+" Maintainer:       Damien Radtke <damienradtke@gmail.com>
+" Latest Revision:  2014 Sep 24
+" For bugs, patches and license go to https://github.com/rust-lang/rust.vim
+
+if exists('current_compiler')
+    finish
+endif
+runtime compiler/rustc.vim
+let current_compiler = "cargo"
+
+" vint: -ProhibitAbbreviationOption
+let s:save_cpo = &cpo
+set cpo&vim
+" vint: +ProhibitAbbreviationOption
+
+if exists(':CompilerSet') != 2
+    command -nargs=* CompilerSet setlocal <args>
+endif
+
+if exists('g:cargo_makeprg_params')
+    execute 'CompilerSet makeprg=cargo\ '.escape(g:cargo_makeprg_params, ' \|"').'\ $*'
+else
+    CompilerSet makeprg=cargo\ $*
+endif
+
+" Ignore general cargo progress messages
+CompilerSet errorformat+=
+            \%-G%\\s%#Downloading%.%#,
+            \%-G%\\s%#Compiling%.%#,
+            \%-G%\\s%#Finished%.%#,
+            \%-G%\\s%#error:\ Could\ not\ compile\ %.%#,
+            \%-G%\\s%#To\ learn\ more\\,%.%#,
+            \%-Gnote:\ Run\ with\ \`RUST_BACKTRACE=%.%#,
+            \%.%#panicked\ at\ \\'%m\\'\\,\ %f:%l:%c
+
+" vint: -ProhibitAbbreviationOption
+let &cpo = s:save_cpo
+unlet s:save_cpo
+" vint: +ProhibitAbbreviationOption
+
+" vim: set et sw=4 sts=4 ts=8: