test: forward $VIMRUNTIME in child nvim instances

test/functional/core/startup_spec.lua

@@ -866,7 +866,11 @@ describe('user config init', function()
 
         local screen = Screen.new(50, 8)
         screen:attach()
-        funcs.termopen({nvim_prog})
+        funcs.termopen({nvim_prog}, {
+          env = {
+            VIMRUNTIME = os.getenv('VIMRUNTIME'),
+          },
+        })
         screen:expect({ any = pesc('[i]gnore, (v)iew, (d)eny, (a)llow:') })
         -- `i` to enter Terminal mode, `a` to allow
         feed('ia')

test/functional/terminal/helpers.lua

@@ -127,7 +127,13 @@ end
 local function setup_child_nvim(args, opts)
   opts = opts or {}
   local argv = { nvim_prog, unpack(args) }
-  return screen_setup(0, argv, opts.cols, opts.env)
+
+  local env = opts.env or {}
+  if not env.VIMRUNTIME then
+    env.VIMRUNTIME = os.getenv('VIMRUNTIME')
+  end
+
+  return screen_setup(0, argv, opts.cols, env)
 end
 
 return {

test/functional/terminal/highlight_spec.lua

@@ -147,6 +147,10 @@ it(':terminal highlight has lower precedence than editor #9964', function()
     '+hi Normal ctermfg=Blue ctermbg=Yellow',
     '+norm! ichild nvim',
     '+norm! oline 2',
+  }, {
+    env = {
+      VIMRUNTIME = os.getenv('VIMRUNTIME'),
+    },
   })
   screen:expect([[
     {N_child:^child nvim                    }|

test/functional/terminal/tui_spec.lua

@@ -24,6 +24,7 @@ local funcs = helpers.funcs
 local meths = helpers.meths
 local is_ci = helpers.is_ci
 local is_os = helpers.is_os
+local is_arch = helpers.is_arch
 local new_pipename = helpers.new_pipename
 local spawn_argv = helpers.spawn_argv
 local set_session = helpers.set_session
@@ -1829,8 +1830,18 @@ describe('TUI', function()
       [5] = {bold = true, reverse = true},
     })
     screen:attach()
+    funcs.termopen({
+      nvim_prog,
+      '--clean',
+      '--cmd', 'colorscheme vim',
+      '--cmd', 'set notermguicolors',
+      '--cmd', 'let start = reltime() | while v:true | if reltimefloat(reltime(start)) > 2 | break | endif | endwhile',
+    }, {
+      env = {
+        VIMRUNTIME = os.getenv('VIMRUNTIME'),
+      },
+    })
     exec([[
-      call termopen([v:progpath, '--clean', '--cmd', 'set notermguicolors', '--cmd', 'colorscheme vim', '--cmd', 'let start = reltime() | while v:true | if reltimefloat(reltime(start)) > 2 | break | endif | endwhile'])
       sleep 500m
       vs new
     ]])
@@ -1849,6 +1860,9 @@ describe('TUI', function()
   end)
 
   it('argv[0] can be overridden #23953', function()
+    if is_arch('aarch64') then
+      pending('execl does not work on aarch64')
+    end
     if not exec_lua('return pcall(require, "ffi")') then
       pending('missing LuaJIT FFI')
     end
@@ -1887,8 +1901,12 @@ describe('TUI', function()
     finally(function()
       os.remove('testF')
     end)
-    local screen = thelpers.screen_setup(0, nvim_prog
-      ..' -u NONE -i NONE --cmd \'set noswapfile noshowcmd noruler\' --cmd \'normal iabc\' > /dev/null 2>&1 && cat testF && rm testF')
+    local screen = thelpers.screen_setup(0,
+      string.format(
+        'VIMRUNTIME=%s %s -u NONE -i NONE --cmd \'set noswapfile noshowcmd noruler\' --cmd \'normal iabc\' > /dev/null 2>&1 && cat testF && rm testF',
+        os.getenv('VIMRUNTIME'),
+        nvim_prog
+    ))
     feed_data(':w testF\n:q\n')
     screen:expect([[
       :w testF                                          |

test/helpers.lua

@@ -376,6 +376,19 @@ function module.is_os(s)
   )
 end
 
+function module.is_arch(s)
+  local machine = luv.os_uname().machine
+  if s == 'arm64' or s == 'aarch64' then
+    return machine == 'arm64' or machine == 'aarch64'
+  end
+
+  if s == 'x86' or s == 'x86_64' or s == 'amd64' then
+    return machine == 'x86_64'
+  end
+
+  return machine == s
+end
+
 local function tmpdir_get()
   return os.getenv('TMPDIR') and os.getenv('TMPDIR') or os.getenv('TEMP')
 end

test/old/testdir/runnvim.vim

@@ -7,6 +7,8 @@ function s:logger.on_exit(id, data, event)
   call add(self.d_events, [a:event, ['']])
 endfunction
 
+let s:logger.env = #{VIMRUNTIME: $VIMRUNTIME}
+
 " Replace non-printable chars by special sequence, or "<%x>".
 let s:escaped_char = {"\n": '\n', "\r": '\r', "\t": '\t'}
 function! s:escape_non_printable(char) abort