From 838972fdb2de0e672cc89a3bb2f076d55a44bda5 Mon Sep 17 00:00:00 2001
From: David Thompson <dthompson2@worcester.edu>
Date: Tue, 19 Jan 2016 09:01:49 -0500
Subject: Fill in all blank slides for Guix talk.

---
 guix-blu-2016-01-20.org | 73 ++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 63 insertions(+), 10 deletions(-)

diff --git a/guix-blu-2016-01-20.org b/guix-blu-2016-01-20.org
index f5f4424..5cc53e6 100644
--- a/guix-blu-2016-01-20.org
+++ b/guix-blu-2016-01-20.org
@@ -230,6 +230,13 @@
   \includegraphics[width=\textwidth]{nsa-vw.png}
   \end{center}
 
+* Transparent
+
+  Guix is a *source-based* package manager, but will *transparently*
+  download pre-built binaries from a trusted party, if available.
+
+  Otherwise, it will simply build from source.
+
 * Decentralized
 
   In Guix, there is *no central point of trust* for receiving
@@ -262,16 +269,22 @@
 
 * Atomic
 
+  Package installation/removal and full-system updates are *atomic*
+  operations, meaning that either the operation succeeds, or nothing
+  happens.
 
+* Roll back
 
-* Atomic
+  /Any/ package transaction may be *rolled back*, likewise for
+  full-system upgrades.
 
-  /Any/ package transaction may be *rolled back*
+  If a full-system update goes wrong, just boot into the previous
+  working generation!
 
 * Coexistence
 
-  Each package has its own *unique* directory in the store in which to
-  write build artifacts.
+  Each package has its own *unique* directory in the store that
+  contains its build artifacts.
 
   You can have every version of Ruby, Python, and Perl under the sun
   and that’s OK!
@@ -401,19 +414,48 @@
 
   Demo Emacs UI, web prototype
 
-* Importing packages from elsewhere
+* Importing packages
+
+  The =guix import= tool that can *automatically generate code
+  snippets* for packages found in foreign systems.
 
-  guix import
+  Supported systems include: PyPI, RubyGems, CPAN, Hackage, ELPA, and
+  CRAN.
 
-  guix refresh
+* Auto-updating
+
+  The =guix refresh= tool can automatically find the latest release of
+  certain software.
+
+  For example, Python packages can be updated by querying PyPI for
+  information on the latest release.
 
 * Demo!
 
   =guix import=
 
-* Development environments
+* Reproducible development environments
+
+  Getting the dependencies needed to create development environments
+  can be tough.
+
+  Many languages invent their own solution, but this is a general
+  problem.
 
-  WRITEME
+* Reproducible development environments
+
+  Guix has a tool for this: =guix environment=
+
+  Think of it like a language-agnostic version of Python’s
+  =virtualenv=.
+
+* Reproducible development environments
+
+  Environments can be *purified* via standard environment variables
+  or, for better isolation, Linux containers.
+
+  This allows developers to have confidence that potential
+  contributors will be able to build their software.
 
 * Demo!
 
@@ -421,7 +463,18 @@
 
 * Full-system configuration
 
-  WRITEME
+  The Guix System Distribution supports a *consistent whole-system
+  configuration mechanism*.
+
+  All aspects of a system configuration are *declared* in a single
+  place.
+
+* Advantages
+
+  Easy to replicate configuration on different machines *without
+  resorting to additional tools* layered on top.
+
+  System upgrades are atomic and can be rolled back.
 
 * Example system configuration
 
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