modified: Install-MMGen-on-Microsoft-Windows.md

Install-MMGen-on-Microsoft-Windows.md

@@ -19,7 +19,9 @@
 * [11. Install and launch your coin daemons](#a_cd)
 * [12. You’re done!](#a_do)
 
-#### [Keeping your MMGen installation up to date](#a_u)
+#### [Keeping your installation up to date](#a_u)
+* [MSYS2](#a_us)
+* [MMGen](#a_um)
 
 ## <a name='a_i'>Introduction</a>
 
@@ -342,8 +344,8 @@ ETC and ERC20 tokens.
 Go to the [**Install Bitcoind and other supported coin daemons**][ib] wiki page
 and follow the instructions for your coins of choice.  You can skip the parts
 about adding to the Windows path, since your `PATH` variable was taken care of
-in Step 5.  Note that the daemons must be installed on both your online and
-offline machines.
+in [Step 5](#a_ev).  Note that the daemons must be installed on both your
+online and offline machines.
 
 To transact ETH, ETC or ERC20 tokens you’ll need the latest OpenEthereum binary
 build for Windows from the [OpenEthereum Github repository][og].  OpenEthereum,
@@ -372,28 +374,40 @@ Please be aware of the following, however:
 + The Bitcoin Cash Node daemon cannot handle non-ASCII pathnames.  This is an
   issue with the Bitcoin Cash Node implementation for Windows, not MMGen.
 
-## <a name='a_u'>Keeping your MMGen installation up to date</a>
+## <a name='a_u'>Keeping your installation up to date</a>
 
-You should periodically update your MMGen installation from the MMGen public
-repository, especially when new releases appear.  This can be done by entering
-the MMGen repository root on your online computer and issuing the following
-commands:
+### <a name='a_us'>MSYS2</a>
+
+You should periodically upgrade your MSYS2 installation, especially when [new
+releases][mh] of the installer appear.  You can check your currently installed
+version of MSYS2 by issuing the command `pacman -Ss msys2-base`.
+
+To perform the upgrade, just repeat [Step 3](#a_ug) of this guide.  Assuming
+your currently configured download mirrors are functional, you can skip the
+parts relating to downloading and editing mirrorlists.
+
+Note that [Step 4](#a_md) need not be performed, as the MMGen dependencies
+are already in `pacman`’s database.
+
+### <a name='a_um'>MMGen</a>
+
+You should periodically upgrade your MMGen installation from the MMGen public
+repository, especially when [new releases][mr] appear.  You can check your
+currently installed version of MMGen by issuing the command `mmgen-tool
+--version`.
+
+To perform the upgrade, enter the MMGen repository root on your online
+computer and issue the following commands:
 
 	$ git checkout master
 	$ git pull
 	$ git checkout stable_msys2 # See 'Note' to step 9
 	$ rm -r dist/* build/*
-
-Then invoke the following (for newer MSYS2 installations):
-
+	$ rm -r /mingw64/lib/python*/site-packages/{mmgen,MMGen}*
 	$ python3 -m build --no-isolation
 	$ cd ..
 	$ python3 -m pip install --upgrade mmgen/dist/*.whl
 
-Or the following (for pre-November 2021 MSYS2 installations):
-
-	$ python3 setup.py install
-
 To update your offline installation, copy the updated repository (after `git
 pull`) to your offline machine, `cd` to the root of the copied repository and
 continue from the `git checkout stable_msys2` step.
@@ -404,6 +418,7 @@ continue from the `git checkout stable_msys2` step.
 [ov]: https://github.com/mmgen/mmgen/releases/tag/v0.9.8
 [sd]: https://download.sysinternals.com/files/SDelete.zip
 [og]: https://github.com/openethereum/openethereum/releases
+[mr]: https://github.com/mmgen/mmgen/releases
 [di]: Deprecated-MSWin-Installation
 [ib]: Install-Bitcoind
 [gs]: Getting-Started-with-MMGen