-The "autoreconf -vi" command can be used to generate the build system
-infrastructure; it reports an error if an inappropriate version of the
-above packages is being used.
+* Installation
+
+See the manual for the installation instructions, either by running
+
+ info -f doc/guix.info "Installation"
+
+or by checking the [[https://www.gnu.org/software/guix/manual/guix.html#Installation][web copy of the manual]].
+
+For information on installation from a Git checkout, please see the section
+"Building from Git" in the manual.
+
+* Installing Guix from Guix
+
+You can re-build and re-install Guix using a system that already runs Guix.
+To do so:
+
+ - Start a shell with the development environment for Guix:
+
+ guix environment guix
+
+ - Re-run the 'configure' script passing it the option
+ '--localstatedir=/somewhere', where '/somewhere' is the 'localstatedir'
+ value of the currently installed Guix (failing to do that would lead the
+ new Guix to consider the store to be empty!). We recommend to use the
+ value '/var'.
+
+ - Run "make", "make check", and "make install".