fix(health): errors in :checkhealth with pyenv-virtualenv #35865

Problem:
pyenv-virtualenv sets a different path for VIRTUAL_ENV than the path to the
python binary it provides, but these paths both symlink to the same file, so
there should be no disparity. The python health-check reports an error, since it
only checks if these paths are equal, not where they point to (resolve to).

Solution:
- Resolve the python symlinks before checking if they are equal.
- Deduplicate some code.

runtime/lua/vim/provider/health.lua

@@ -805,27 +805,32 @@ local function python()
       local nvim_py_bin = python_exepath(vim.fn.exepath(py_bin_basename))
       if nvim_py_bin then
         local subshell_py_bin = python_exepath(py_bin_basename)
-        if venv_bin ~= nvim_py_bin then
+        local bintable = {
-          errors[#errors + 1] = '$PATH yields this '
+          ['nvim'] = {
-            .. py_bin_basename
+            ['path'] = nvim_py_bin,
-            .. ' executable: '
+            ['hint'] = '$PATH ambiguities arise if the virtualenv is not '
-            .. nvim_py_bin
+              .. 'properly activated prior to launching Nvim. Close Nvim, activate the virtualenv, '
-          local hint = '$PATH ambiguities arise if the virtualenv is not '
+              .. 'check that invoking Python from the command line launches the correct one, '
-            .. 'properly activated prior to launching Nvim. Close Nvim, activate the virtualenv, '
+              .. 'then relaunch Nvim.',
-            .. 'check that invoking Python from the command line launches the correct one, '
+          },
-            .. 'then relaunch Nvim.'
+          ['subshell'] = {
-          hints[hint] = true
+            ['path'] = subshell_py_bin,
-        end
+            ['hint'] = '$PATH ambiguities in subshells typically are '
-        if venv_bin ~= subshell_py_bin then
+              .. 'caused by your shell config overriding the $PATH previously set by the '
-          errors[#errors + 1] = '$PATH in subshells yields this '
+              .. 'virtualenv. Either prevent them from doing so, or use this workaround: '
-            .. py_bin_basename
+              .. 'https://vi.stackexchange.com/a/34996',
-            .. ' executable: '
+          },
-            .. subshell_py_bin
+        }
-          local hint = '$PATH ambiguities in subshells typically are '
+        for bintype, bin in pairs(bintable) do
-            .. 'caused by your shell config overriding the $PATH previously set by the '
+          if vim.fn.resolve(venv_bin) ~= vim.fn.resolve(bin['path']) then
-            .. 'virtualenv. Either prevent them from doing so, or use this workaround: '
+            local type_of_path = bintype == 'subshell' and '$PATH' or '$PATH in subshell'
-            .. 'https://vi.stackexchange.com/a/34996'
+            errors[#errors + 1] = type_of_path
-          hints[hint] = true
+              .. ' yields this '
+              .. py_bin_basename
+              .. ' executable: '
+              .. bin['path']
+            hints[bin['hint']] = true
+          end
         end
       end
     end