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109/131: doc: Update references to PYTHONPATH and some examples.

From: guix-commits
Subject: 109/131: doc: Update references to PYTHONPATH and some examples.
Date: Fri, 29 Jan 2021 09:22:16 -0500 (EST)

apteryx pushed a commit to branch cu/farewell-to-pythonpath
in repository guix.

commit 6046a6034c8db127140f929cf7026bb747baf73a
Author: Maxim Cournoyer <>
AuthorDate: Mon Jan 25 14:58:01 2021 -0500

    doc: Update references to PYTHONPATH and some examples.
    The PYTHONPATH variable is replaced by GUIX_PYTHONPATH.  Refresh the 
    used or shown in some of the examples.
 doc/guix.texi | 37 ++++++++++++++++++++-----------------
 1 file changed, 20 insertions(+), 17 deletions(-)

diff --git a/doc/guix.texi b/doc/guix.texi
index 194bb3a..2347a77 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -48,7 +48,7 @@ Copyright @copyright{} 2017 humanitiesNerd@*
 Copyright @copyright{} 2017 Christopher Allan Webber@*
 Copyright @copyright{} 2017, 2018, 2019, 2020 Marius Bakke@*
 Copyright @copyright{} 2017, 2019, 2020 Hartmut Goebel@*
-Copyright @copyright{} 2017, 2019, 2020 Maxim Cournoyer@*
+Copyright @copyright{} 2017, 2019, 2020, 2021 Maxim Cournoyer@*
 Copyright @copyright{} 2017, 2018, 2019, 2020 Tobias Geerinckx-Rice@*
 Copyright @copyright{} 2017 George Clemmer@*
 Copyright @copyright{} 2017 Andy Wingo@*
@@ -2734,8 +2734,8 @@ you should add them to @file{~/.bash_profile} (or 
equivalent file if you
 do not use Bash) so that environment variables are set next time you
 spawn a shell.  You only need to do this once and other search paths
 environment variables will be taken care of similarly---e.g., if you
-eventually install @code{python} and Python libraries, @code{PYTHONPATH}
-will be defined.
+eventually install @code{python} and Python libraries,
+@env{GUIX_PYTHONPATH} will be defined.
 You can go on installing packages at your will.  To list installed
 packages, run:
@@ -3471,24 +3471,26 @@ Show details about @var{package}, taken from the list 
of available packages, in
 recutils manual}).
-$ guix package --show=python | recsel -p name,version
-name: python
-version: 2.7.6
+$ guix package --show=guile | recsel -p name,version
+name: guile
+version: 3.0.5
-name: python
-version: 3.3.5
+name: guile
+version: 3.0.2
+name: guile
+version: 2.2.7
 @end example
 You may also specify the full name of a package to only get details about a
 specific version of it (this time using the @command{guix show} alias):
-$ guix show python@@3.4 | recsel -p name,version
-name: python
-version: 3.4.3
+$ guix show guile@@3.0.5 | recsel -p name,version
+name: guile
+version: 3.0.5
 @end example
 @item --list-installed[=@var{regexp}]
 @itemx -I [@var{regexp}]
 List the currently installed packages in the specified profile, with the
@@ -5493,11 +5495,11 @@ guix environment guile -- make -j4
 In other situations, it is more convenient to specify the list of
 packages needed in the environment.  For example, the following command
-runs @command{python} from an environment containing Python@tie{}2.7 and
+runs @command{python} from an environment containing Python@tie{}3 and
-guix environment --ad-hoc python2-numpy python-2.7 -- python
+guix environment --ad-hoc python-numpy python -- python3
 @end example
 Furthermore, one might want the dependencies of a package and also some
@@ -7739,8 +7741,9 @@ packages, which consists in running @code{python 
build} and
 then @code{python install --prefix=/gnu/store/@dots{}}.
 For packages that install stand-alone Python programs under @code{bin/},
-it takes care of wrapping these programs so that their @env{PYTHONPATH}
-environment variable points to all the Python libraries they depend on.
+it takes care of wrapping these programs so that their
+@env{GUIX_PYTHONPATH} environment variable points to all the Python
+libraries they depend on.
 Which Python package is used to perform the build can be specified with
 the @code{#:python} parameter.  This is a useful way to force a package

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