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+% Debian Pure Blends
+% Jonas Smedegaard (& Andreas Tille)
+% Hồ Chí Minh, Việt Nam, November 12th, 2010
+
+# Overview
+
+  * Debian is generic - Blends are specific
+  * Purity: all is Debian
+  * Why bother?
+  * Technical details
+  * Team, community, users
+  * Future
+
+# Debian - the universal Operating System
+
+  * Stable
+  * Flexible
+
+Debian is the universal Operating System.
+
+Goal
+  : Usable everywhere
+
+# Debian - very flexible...
+
+> * Flexible: good
+  * Very flexible: very good
+
+# Debian - **too** flexible!
+
+  * Flexible: good
+  * ~~Very flexible: very good~~
+  * Very flexible: very confusing!
+
+Debian is too flexible: confusing and to some even scary!
+
+# Debian - ways to simplify
+
+  1. Keep things as-is - educate users instead
+  1. Remove choice
+  1. Provide multiple defaults
+
+# Debian - simple if generic defaults are ok
+
+  * Mainstream (but not too new) hardware
+  * GNOME desktop
+  * Iceweasel web browser
+  * Exim MTA
+  * Apache web server
+  * MySQL database server
+
+Debian *is* simple - if you happen to like its defaults.
+
+# Debian Pure Blend - Debian for a specific purpose
+
+Debian Pure Blend (in short DDD): a subset of Debian configured to
+support a particular target group out-of-the-box.
+
+Goal 1
+  : Turn Debian into the distribution of choice for a specific target
+    group
+Goal 2
+  : Advertise this fact to the world to attract users and developers
+
+# Debian Pure Blend - technical parts
+
+  * package selection(s)
+  * customizations
+
+The concrete work to include as packages with official Debian.
+
+# Debian Pure Blend - reality parts
+
+  * goals & noise about progress
+  * package health + encourage additional software packaging
+  * passion & patience
+  * good relations with Debian package maintainers, competitors, and upstream authors
+  * good relations with users
+
+Surrounding work making a Blend relevant.
+
+# Debian Pure Blend - current blending projects
+
+  * Debian Jr
+  * Debian Med
+  * Debian Edu
+  * Debian Science
+  * Debian EzGo
+  * BrDesktop
+  * Debian Accessibility
+  * Debian Lex
+  * DebiChem
+  * Debian GIS
+  * Debian Multimedia
+
+Projects working on Blends - some pure, some not (yet)...
+
+# Debian Pure Blends - all Debian
+
+  * **D**ebian packages - selections (e.g. for tasksel to pick up)
+  * **D**ebian configuration - use of policy-compliant package-provided interfaces
+  * **D**ebian distribution media - installing via Debian itself
+
+DDD
+  : **Debian** packages **Debian** configured from **Debian** distribution
+
+# Debian Pure Blends - why bother?
+
+Nice on paper with ideals and priciples, but...
+
+What's in it for me?!?
+
+# Debian Pure Blends - downsides
+
+  * **annoying** - Debian package maintainers may not like proposed changes
+  * **slow** - stable distribution is released infrequently
+  * **rigid** - all contributions must match Debian Free Software Guidelines
+  * **complex** - packages must obey Debian Policy
+
+# Debian Pure Blends - Benefits
+
+  * backed by Debian - help, bug tracking, translations, etc.
+  * teamwork - others might help you refine and maintain your setups
+  * common structures - others might take over if you loose interest
+
+# Tech - Debian support overloading choices
+
+  * Debian installer
+  * tasksel
+  * debconf
+  * aptitude
+
+# Tech - examples of non-pure blending
+
+  * include non-Debian packages or non-packaged stuff
+  * include Debian packages from different Debian suite
+  * configure system other than via Debian package installation
+  * install using non-Debian media
+
+You don't own your system - you provide one for others to own.
+
+So don't refine it like a (sloppy) user: Handle it like a Debian developer!
+
+# Tech - Debian, generic setup
+
+  * select package profile(s)
+  * install
+
+# Tech - Debian, hand-tuned
+
+  * select package profile(s)
+  * select additional packages
+  * install
+  * (re)configure packages
+
+# Tech - Debian, auto-tuned
+
+  * pre-seed package selection
+  * pre-seed package configurations
+  * install
+  * (re)configure non-debconf packages
+
+# Tech - Debian Pure Blend = generic
+
+  * select blend profile
+  * install
+
+# Tech - tasks involved
+
+  * extra software → into Debian officially
+  * manual configurations → preseeding
+  * maybe create temporary dirty hacks
+  * maybe use/create reusable tweaks
+  * eliminate dirty hacks and tweaks
+  * convince others in Debian to add as tasksel task
+
+# Tech - blends-dev
+
+Tool to help maintain package lists and prospective packages.
+
+Example: <http://debian-med.alioth.debian.org/tasks/psychology>
+
+# Tech - dirty tricks
+
+Avoid configuration files...
+
+  * config.d folders
+  * databases
+  * networked data
+
+# Tech - tweaks
+
+Reusable scripts compatible with one or more of...
+
+  * FAI
+  * hands-off at http://hands.com/d-i/
+  * CFengine
+  * Puppet
+
+# Tech - good style
+
+  * Aptitude
+  * debconf
+  * Config::Model
+
+# Tech - When is it "Pure"?
+
+When all is in Debian, with no dirty tricks:
+
+  * package selection(s)
+  * customizations
+  * installation
+
+# Team - getting involved
+
+  * identify and isolate tweaks at your own system
+  * register missing software - on wiki page or (better!) in Debian BTS
+  * write documentation
+  * write the dream of how things ought to work
+  * wite how details work now
+  * discuss downstream (i.e. with users and subdistros) how things work /
+    should work
+  * discuss upstream (i.e. with authors) what is possible now / soon
+
+# Team - getting involved II
+
+  * write intro for peer enthusiasts
+  * decide and document ideal formats  - translations, graphics etc.
+  * prioritize pending tasks - of various kinds to encourage many
+    different contributions
+  * document where it is ok to ask beginners' questions
+  * document if beginners can ask for a mentor
+
+# Team - getting involved III
+
+  * make illustration
+  * make screendumps
+  * make fan graphics
+  * make desktop backgrounds, CD covers, stickers, etc.
+  * Register the project as a DOAP file, and maybe at Ohloh and Freshmeat
+    etc.
+  * Register and maintain relevant Debtags
+
+# Team - getting involved IV
+
+  * Translate package descriptions
+  * Translate debconf dialogs
+  * Translate upstream code
+
+# Team - getting involved V
+
+  * Help integrate contributions from graphics artists, translators and
+    others
+  * document decision processes of the team (and Debian and upstreams?)
+  * document workflows in teams
+  * insist on transparency - not only for code!
+
+# Team - Continuous status checks
+
+  * Ask users about their needs - you will forget over time!
+  * Ask teams about their tasks - each participant has slightly different
+    perception of the common vision and status
+  * Ask upstreams about use: perhaps potentials are missed, or code or
+    persons feel as being abused
+
+# Debian Pure Blends - Future
+
+ * debconf dontcare vs. explicit choice of default option
+ * debconf query mechanism (and fill buffer from live system)
+ * APT explicit choice of alternate dependency/recommendation
+ * APT dontcare vs. explicit choice of default dependency/recommendation
+ * Config::Model - semantic configfile handling