Update python docs to 3.6.8, simplify index

www/default.nix

@@ -2,13 +2,13 @@
 }:
 let
   baseVer = "3.6";
-  docsName = "python-${baseVer}.7-docs-html";
+  docsName = "python-${baseVer}.8-docs-html";
   python-docs = pkgs.stdenv.mkDerivation {
     name = "python3-docs";
     src = pkgs.fetchurl
       { url = "https://docs.python.org/${baseVer}/archives/${docsName}.tar.bz2";
         # Unfortunately, this SHA can change on next download
-        sha256 = "03bkh48zyhrc4zvx9sdva048gk83hvgzr4wgd5w7z7d7rrv9b045";
+        sha256 = "0zmqv72860dhgf1ks2r8vy82krr6ilikv8xv5rwgaznwabk6fd4m";
       };
     unpackPhase = "";
     buildPhases = ["installPhase"];

www/index.org

 #+TITLE: LIUCS Virtual Machine
 
-* Usage
-
 Welcome to the VM.
 
-- [[file:python3/][Python 3 documentation]]
+** Local documentation
+
+- [[file:python3/][Python 3]]
+
+** Custom commands
 
-#+ATTR_HTML: :width 48
-[[https://iconsplace.com/wp-content/uploads/_icons/0000ff/256/png/virtual-machine-2-icon-2-256.png]]
+- ~liucs-version~ -- report on VM version and check for updates
+- ~liucs-update~ -- update software and configuration to latest
+  revisions
+- ~liucs-desktop-reset~ -- restore some desktop settings to original
+  (prescribed) state