Documentation updates

doc/nukevim.txt

@@ -140,28 +140,26 @@ important to get immediately productive.
 Check out, unzip, copy or otherwise place the repo contents in your
 `~/.config/nvim` folder (or whatever your platform uses).
 
-Run `nvim +PlugInstall +NukeVimInstall +qall` to install all the relevant
-plugins, perform any initial NukeVim or other plugin setup tasks, and exit.
+Run `nvim +NukeVimInstall +qall` to install all the relevant plugins, perform
+any initial NukeVim or other plugin setup tasks, and exit.
 
-This may take several minutes if you have a few coc extensions. npm is sloooow.
+This may take a few minutes.
 
 
 --------------------------------------------------------------------------------
 2.1 Dependencies                                             *NukeVimDependencies*
 
-Your nvim install should have the Python3 provider properly set up. Verify
-this with the `:checkhealth` command. Generally this requires installing the
-`pynvim` package, but the checkhealth command should point you in the right
-direction.
+There are providers, external programs, and several other things required in
+order for all plugins and included functionality to work (or even make sense).
 
-// TODO: Add a NukeVim checkhealth provider to just validate all this shit automatically.
+If any specific functionality is missing a dependency, NukeVim _should_ continue
+to function without that dependency just missing the relevant functionality. If
+it does not, that's a bug.
 
-Several plugins require external programs in order to function (in many cases
-to even make sense at all). Those are listed below.
+At any time you should be able to validate which plugins are enabled and, if
+they are not, why they failed to function by running `:checkhealth nukevim`.
 
-Generally you should be able to get by without any of these programs installed,
-the associated plugins should just automatically be disabled. If not, that's
-a bug.
+For reference, the external dependencies are listed below:
 
 *composer* -- php package manager
 Required By: phpctags, vim-composer
@@ -191,6 +189,9 @@ See: https://docs.npmjs.com/downloading-and-installing-node-js-and-npm
 Required By: phpctags, vim-composer
 See: https://php.org/
 
+*python3* -- neovim python3 provider (python3 + pip3 install pynvim)
+Required By: vdebug
+
 
 ================================================================================
 3. Features                                                       *NukeVimFeature*
@@ -461,6 +462,7 @@ screen.
 ================================================================================
 5. Modules                                                         *NukeVimModule*
 
+
 Modules are the core of NukeVim, generally providing high-level/core
 functionality. Though because of technical limitations there are a couple that
 are quite specific.
@@ -652,8 +654,8 @@ logic. See |NukeVimArchPlugin| for more information.
 
 If any of a plugin's requirements are not met it will simply not be loaded. This
 should allow NukeVim to simply adapt to whatever is available at the time. If
-any expected functionality is missing, running `:checkhealth` should report
-why a plugin wasn't loaded under the plugin module section.
+any expected functionality is missing, running `:checkhealth nukevim` should
+report why a plugin wasn't loaded under the plugin module section.
 
 
 --------------------------------------------------------------------------------