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+#+TITLE: Practical, verifiable software freedom with GuixSD
+#+AUTHOR: David Thompson
+#+EMAIL: dthompson2@worcester.edu
+#+DATE: Sunday, March 25th, 2018
+#+DESCRIPTION:
+#+KEYWORDS:
+#+LANGUAGE:  en
+#+OPTIONS:   H:1 num:t toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
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+#+INFOJS_OPT: view:nil toc:nil ltoc:t mouse:underline buttons:0 path:http://orgmode.org/org-info.js
+#+EXPORT_SELECT_TAGS: export
+#+EXPORT_EXCLUDE_TAGS: noexport
+#+LINK_UP:
+#+LINK_HOME:
+#+startup: beamer
+#+LaTeX_CLASS: beamer
+#+LaTeX_CLASS_OPTIONS: [bigger]
+#+COLUMNS: %40ITEM %10BEAMER_env(Env) %9BEAMER_envargs(Env Args) %4BEAMER_col(Col) %10BEAMER_extra(Extra)
+#+LATEX_HEADER: \beamertemplatenavigationsymbolsempty
+#+BEAMER_THEME: metropolis
+
+* about me
+
+  GNU Guix contributor since 2013
+
+  GNU Guile user and contributor since 2012
+
+  Day job: DevOps (AWS, Ruby)
+
+* the four freedoms
+
+  0: The freedom to run the program as you wish, for any purpose
+
+* the four freedoms
+  1: The freedom to study how the program works, and change it so it
+     does your computing as you wish
+
+* the four freedoms
+  2: The freedom to redistribute copies so you can help your neighbor
+
+* the four freedoms
+  3: The freedom to distribute copies of your modified versions to
+     others
+
+* the four freedoms
+
+  a wonderful set of rights, but often *difficult to exercise in
+  practice*
+
+* common issues
+
+  figuring out how to view the exact source for a running program is
+  tricky
+
+  - ??
+
+* common issues
+
+  building from source is difficult or sometimes impossible
+
+  - non-standard build system
+  - build scripts make assumptions that aren't true for your system
+
+* common issues
+
+  sharing source or binaries has many pitfalls
+
+  - dependency hell
+  - incompatible libraries between systems
+  - high barrier to entry for common package managers
+
+* freedom: embedded
+
+  GuixSD removes many of the common barriers that prevent users from
+  exercising their four freedoms
+
+* what is guixsd?
+
+  <logo>
+
+  fully-free GNU/Linux distribution with an advanced package
+  manager and system upgrade mechanism
+
+* what is guix?
+
+  GuixSD's package manager
+
+  “functional” package manager
+
+  atomic updates and rollbacks
+
+* unprivileged package management
+
+  Users can build and install software *without root privileges*
+
+* unprivileged package management
+
+  Each user may have one or more “profiles”, a union of many packages.
+
+  Use cases:
+
+  - Alyssa and Ben use different versions of Emacs
+  - Alyssa hacks on 2 Ruby projects that require different versions
+
+* experiment without fear
+
+  =guix package --roll-back=
+
+  =guix system reconfigure=
+
+* inspecting source code
+
+  =guix build --source=
+
+* inspecting dependency graph
+
+  =guix graph=
+
+  <small dependency graph image>
+
+* sharing system configurations
+
+  <minimal code example here>
+
+* sharing packages
+
+  =guix build -L ~/daves-packages foo=
+
+  <minimal package example>
+
+* sharing development environments
+
+  =guix environment=
+
+  <minimal environment file example>
+
+* sharing binaries
+
+  Use =guix publish= to spawn a web server that allows other Guix
+  users to download the software you've already built
+
+  #+BEGIN_SRC sh
+    guix build \
+         --substitute-urls=http://guix.dthompson.us:8080 \
+         hello
+  #+END_SRC
+
+* reproducible builds
+
+  did anyone attend "You think you're not a target? A tale of three
+  developers..." by Chris Lamb yesterday?
+
+  =guix build --rounds=N=
+
+* verifying binaries
+
+  =guix challenge=
+
+* customize packages
+
+  =guix edit=
+
+  =guix build=
+
+* interoperate with other systems
+
+  =guix pack=
+
+* extending
+
+  GuixSD is essentially a big Scheme library
+
+* literally: embedded
+
+  GuixSD now runs on the Beaglebone Black single-board computer!
+
+* the freedom to contribute
+
+  GNU Guix is a welcoming community:
+
+  we have a *code of conduct* and *enforce* it
+
+  we have started seeking new contributors via *Outreachy*
+
+  we participate in *Google Summer of Code* every year
+
+  oh, and no copyright assignment (in case you were wondering)
+
+* thanks!
+
+  \begin{center}
+  docs, past talks, source code, mailing list/IRC info, etc.:
+  \huge{\textbf{https://gnu.org/s/guix}}
+  \end{center}
+
+* credits
+
+  Copyright 2018 David Thompson
+
+  Licensed under Creative Commons Attribution Share-Alike 4.0