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+#+COLUMNS: %40ITEM %10BEAMER_env(Env) %9BEAMER_envargs(Env Args) %10BEAMER_act(Act) %4BEAMER_col(Col) %10BEAMER_extra(Extra) %8BEAMER_opt(Opt)
+#+TITLE: The Software Heritage Archive
+#+SUBTITLE: an essential infrastructure for industry
+# #+AUTHOR: Benoit Chauvet
+# #+EMAIL: contact@benoitchauvet.com
+#+BEAMER_HEADER: \date[18/10/2022]{18/10/2022\\Club Qualité Logicielle}
+#+BEAMER_HEADER: \title[www.softwareheritage.org]{The Software Heritage archive}
+#+BEAMER_HEADER: \author[B. Chauvet~~~~ contact@benoitchauvet.com ~~~~ (CC-BY 4.0)]{Benoit Chauvet}
+#+BEAMER_HEADER: \institute[Software Heritage]{Engineering Manager, Software Heritage\\Inria}
+# #+BEAMER_HEADER: \setbeameroption{show notes on second screen}
+#+BEAMER_HEADER: \setbeameroption{hide notes}
+#+KEYWORDS: software heritage legacy preservation knowledge mankind technology
+#+LATEX_HEADER: \usepackage{tcolorbox}
+#+LATEX_HEADER: \definecolor{links}{HTML}{2A1B81}
+#+LATEX_HEADER: \hypersetup{colorlinks,linkcolor=,urlcolor=links}
+
+#
+# prelude.org contains all the information needed to export the main beamer latex source
+# use prelude-toc.org to get the table of contents
+#
+
+#+INCLUDE: "../../common/modules/prelude-toc.org" :minlevel 1
+
+
+#+INCLUDE: "../../common/modules/169.org"
+
+# +LaTeX_CLASS_OPTIONS: [aspectratio=169,handout,xcolor=table]
+
+#+LATEX_HEADER: \usepackage{bbding}
+#+LATEX_HEADER: \DeclareUnicodeCharacter{66D}{\FiveStar}
+
+#
+# If you want to change the title logo it's here
+#
+# +BEAMER_HEADER: \titlegraphic{\includegraphics[width=0.5\textwidth]{SWH-logo}}
+
+# aspect ratio can be changed, but the slides need to be adapted
+# - compute a "resizing factor" for the images (macro for picblocks?)
+#
+# set the background image
+#
+# https://pacoup.com/2011/06/12/list-of-true-169-resolutions/
+#
+#+BEAMER_HEADER: \pgfdeclareimage[height=90mm,width=160mm]{bgd}{swh-world-169.png}
+#+BEAMER_HEADER: \setbeamertemplate{background}{\pgfuseimage{bgd}}
+#+LATEX: \addtocounter{framenumber}{-1}
+
+* Introduction
+#+INCLUDE: "../../common/modules/rdc-bio.org::#main" :only-contents t :minlevel 2
+
+** Short Bio: Stefano Zacchiroli
+  :PROPERTIES:
+  :CUSTOM_ID: biosz
+  :END:
+
+   - Free/Open Source Software activist (20+ years)
+   - \emph{IRILL} researcher
+
+   \mbox{}\\
+   \begin{minipage}[c]{0.18\linewidth}
+     \includegraphics[width=1.0\linewidth]{zack}
+   \end{minipage}
+   \begin{minipage}[c]{0.8\linewidth}
+     \begin{description}
+       \item[2010-2013] \emph{Debian} Project Leader
+       \item[2011] Associate Professor of Computer Science, Université de Paris, on leave at Inria
+       \item[2014-2017] \emph{Open Source Initiative (OSI)} director
+       \item[2015] \emph{Software Heritage} co-founder & CTO
+       \item[2021] Professor of Computer Science, \emph{Télécom Paris}
+     \end{description}
+   \end{minipage}
+
+
+* The Software Heritage Archive
+
+** Why an archive ? Software is spread all around
+  :PROPERTIES:
+  :CUSTOM_ID: spread
+  :END:
+   #+latex: \begin{flushleft}
+   #+ATTR_LATEX: :width \extblockscale{.5\linewidth}
+   file:myriadsources.png
+   #+latex: \end{flushleft}
+
+*** Fashion victims
+    - many disparate development platforms
+    - a myriad places where distribution may happen
+    - projects tend to migrate from one place to another over time
+
+*** One place...                                                    :B_block:
+    :PROPERTIES:
+    :BEAMER_env: block
+    :END:
+    \hfill ... where can we find, track and search /all/ source code?
+
+** Why an archive ? Software is fragile
+  :PROPERTIES:
+  :CUSTOM_ID: fragile
+  :END:
+   #+latex: \begin{flushleft}
+   #+ATTR_LATEX: :width \extblockscale{.5\linewidth}
+   file:fragilecloud.png
+   #+latex: \end{flushleft}
+
+*** Like all digital information, FOSS is fragile
+#    - inconsiderate and/or malicious code loss (e.g., Code Spaces)
+    - link rot: projects are created, moved around, removed
+    - business-driven code loss (e.g., Gitorious, Google Code, Bitbucket)
+    - data rot: physical media with legacy software decay
+
+*** If a website disappears you go to the Internet Archive... 	    :B_block:
+    :PROPERTIES:
+    :BEAMER_env: block
+    :END:
+    \hfill where do you go if (a repository on) GitHub or GitLab goes away?
+
+** Software is missing its own Research Infrastructure
+  :PROPERTIES:
+  :CUSTOM_ID: research
+  :END:
+   #+latex: \begin{flushleft}
+   #+ATTR_LATEX: :width \extblockscale{.4\linewidth}
+   file:atacama-telescope.jpg
+   #+latex: \mbox{}\\{\tiny Photo: ALMA(ESO/NAOJ/NRAO), R. Hills}
+   #+latex: \end{flushleft}
+*** A wealth of software research on crucial issues...
+    - safety, security, test, verification, proof
+    - software engineering, software evolution
+    - empirical and big data studies
+
+*** If you study the stars, you go to Atacama... 		    :B_block:
+    :PROPERTIES:
+    :BEAMER_env: block
+    :END:
+    \hfill ... where is the /very large telescope/ of source code?
+
+
+
+** Our mission: Collect, Preserve and Share
+
+*** Collect
+    :PROPERTIES:
+    :BEAMER_COL: .3
+    :BEAMER_env: block
+    :END:
+    #+BEGIN_EXPORT latex
+    \begin{center}
+    \includegraphics[width=.7\linewidth]{this/collect.jpg}
+    \end{center}
+    #+END_EXPORT
+    Reference catalogue:
+    - *find* and *reference* all software source code (open source)
+
+*** Preserve
+    :PROPERTIES:
+    :BEAMER_COL: .3
+    :BEAMER_env: block
+    :END:
+    #+BEGIN_EXPORT latex
+    \begin{center}
+    \includegraphics[width=.7\linewidth]{this/preserve.jpg}
+    \end{center}
+    #+END_EXPORT
+    Universal archive:
+    - *preserve* all the archived software source code *forever*
+
+
+*** Share
+    :PROPERTIES:
+    :BEAMER_COL: .3
+    :BEAMER_env: block
+    :END:
+    #+BEGIN_EXPORT latex
+    \begin{center}
+    \includegraphics[width=.7\linewidth]{this/share.jpg}
+    \end{center}
+    #+END_EXPORT
+    Research infrastructure:
+    - *enable analysis* of all software source code
+    - make every piece *identifiable* and freely *available*
+
+**  Our principles 
+  :PROPERTIES:
+  :CUSTOM_ID: principlesstatus
+  :END:
+#+latex: \begin{center}
+#+ATTR_LATEX: :width .6\linewidth
+file:SWH-as-foundation-slim.png
+#+latex: \end{center}
+#+latex: \footnotesize\vspace{-3mm}
+
+ #+latex: \centering
+ #+ATTR_LATEX: :width \extblockscale{.8\linewidth}
+ file:2022-05-06-archive-growth.png
+
+** Collect strategies
+  :PROPERTIES:
+  :CUSTOM_ID: automation
+  :END:
+   #+BEAMER: \begin{center}
+   #+BEAMER:   \only<1>{\includegraphics[width=\extblockscale{\textwidth}]{swh-collect-strategies.pdf}}
+   #+BEAMER: \end{center}
+
+* A peek under the hood
+** Crawling forges and  repos
+*** Forges and repositories  
+  :PROPERTIES:
+  :BEAMER_COL: .5
+  :BEAMER_env: block
+  :END:
+   #+BEAMER: \begin{center}
+   #+BEAMER:   \only<1>{\includegraphics[width=0.8\linewidth]{this/listers.png}}
+   #+BEAMER: \end{center}
+*** Actual coverage
+  :PROPERTIES:
+  :BEAMER_COL: .5
+  :BEAMER_env: block
+  :END:
+   /Global development history/ *permanently archived* in a *uniform data model*
+   - over *12 billion* unique source files from almost *180 million* software projects
+   - *~900 TB* (uncompressed) blobs, *~25 B* nodes, *~300 B* edges
+   - Supported listers
+   - Supported loaders
+
+** Automation and storage (merkle graph)
+  :PROPERTIES:
+  :CUSTOM_ID: automation
+  :END:
+   #+BEAMER: \begin{center}
+   #+BEAMER:   \only<1>{\includegraphics[width=1\linewidth]{swh-dataflow-merkle.png}}
+   #+BEAMER: \end{center}
+
+** Metadata landscape
+
+#+latex: \begin{center}
+   #+ATTR_LATEX: :width \linewidth
+file:metadata_landscape_RDA11.png
+#+latex: \end{center}
+
+** Software Heritage Identifiers (SWHIDs) \hfill [[https://docs.softwareheritage.org/devel/swh-model/persistent-identifiers.html][(full spec)]]
+*** SWHID structure
+  :PROPERTIES:
+  :CUSTOM_ID: oneslide
+  :END:
+   #+LATEX: \centering
+   #+LATEX: \includegraphics[width=0.8\linewidth]{SWHID-v1.4_3.png}
+   #+LATEX: \forcebeamerend 
+
+*** An emerging standard
+    :PROPERTIES:
+    :BEAMER_COL: .6
+    :BEAMER_env: block
+    :END:
+    - Linux Foundation[[https://spdx.github.io/spdx-spec/appendix-VI-external-repository-identifiers/#persistent-id][SPDX 2.2]] 
+    - IANA-registered ="swh:"= URI prefix 
+    - WikiData property [[https://www.wikidata.org/wiki/Property:P6138][P6138]]
+*** examples : 
+    :PROPERTIES:
+    :BEAMER_COL: .4
+    :BEAMER_env: block
+    :END:
+    - [[https://archive.softwareheritage.org/swh:1:cnt:64582b78792cd6c2d67d35da5a11bb80886a6409;origin=https://github.com/virtualagc/virtualagc;visit=swh:1:snp:3c074afad81ad6b14d434b96e705e01d184752cf;anchor=swh:1:rev:007c2b95f301f9438b8b74d7993b7a3b9a66255b;path=/Luminary099/THE_LUNAR_LANDING.agc;lines=245-261/][Apollo 11 AGC excerpt]] 
+    - [[https://archive.softwareheritage.org/swh:1:cnt:bb0faf6919fc60636b2696f32ec9b3c2adb247fe;origin=https://github.com/id-Software/Quake-III-Arena;visit=swh:1:snp:4ab9bcef131aaf449a7c01370aff8c91dcecbf5f;anchor=swh:1:rev:dbe4ddb10315479fc00086f08e25d968b4b43c49;path=/code/game/q_math.c;lines=549-572/][Quake III rsqrt]] 
+
+
+** Deposit : Save code now, add forge now, Deposit, SWHAP
+
+* Benefits for industry
+** A universal software warehouse
+** Map of the stars
+** Persistent unique references
+
+* Industry use cases
+
+** Complete Corresponding Source (CCS) hosting
+   :PROPERTIES:
+   :CUSTOM_ID: ccs-compliance
+   :END:
+  #+BEAMER: \vspace{-1mm}
+*** Complete Corresponding Source (CCS) requirement
+   #+BEGIN_QUOTE
+   For an executable work, complete source code means all the source code for
+   all modules it contains, plus any associated interface definition files,
+   plus the scripts used to control compilation and installation of the
+   executable.\hfill --- /GPLv2/
+   #+END_QUOTE
+
+  #+BEAMER: \vspace{-1mm}
+*** CCS management in the real world
+    - CCS tarballs published at release time; URLs included in user manuals
+    - IT reorganizations → link rot (e.g., 404 on CCS URLs) → out of compliance
+
+#  #+BEAMER: \pause
+  #+BEAMER: \vspace{-1mm}
+*** A better approach \hfill (Intel+SWH prototype)
+    :PROPERTIES:
+    :BEAMER_env: block
+    :BEAMER_COL: .48
+    :END:
+    Delegate CCS hosting to an archive:
+    1. prepare CCS tarball
+    2. deposit it to Software Heritage
+    3. include SWHID in user manuals
+
+#  #+BEAMER: \pause
+*** Is it compliant?
+    :PROPERTIES:
+    :BEAMER_env: block
+    :BEAMER_COL: .55
+    :END:
+    - yes! (with agreement with hoster)
+    - Cf. GPL FAQ /Can I put the binaries on my Internet server and put the
+      source on a different Internet site?/
+
+
+** Open Invention Network (OIN)
+
+*** Mission
+ 
+- World’s largest patent non-aggression community and free defensive patent pool
+- Linux System : linux core + external open source components
+- 3700+ members (Google, IBM/Red Hat, SUSE, Sony, NEC, Philips, Toyota)
+- https://openinventionnetwork.com
+
+*** Software Heritage Contribution
+- Use SWHIDs to reference FOSS patents
+    #+BEGIN_EXPORT latex
+    \begin{center}
+    \includegraphics[width=.9\linewidth]{this/oin_table.png}
+    \end{center}
+    #+END_EXPORT 
+
+
+* Getting involved
+** An international, non profit initiative\hfill built for the long term
+  :PROPERTIES:
+  :CUSTOM_ID: support+sponsors
+  :END:
+*** Sharing the vision                                              :B_block:
+  :PROPERTIES:
+  :CUSTOM_ID: endorsement
+  :BEAMER_COL: .5
+  :BEAMER_env: block
+  :END:
+   #+LATEX: \begin{center}{\includegraphics[width=\extblockscale{.4\linewidth}]{unesco_logo_en_285}}\end{center}
+   #+LATEX: \vspace{-0.8cm}
+   #+LATEX: \begin{center}\vskip 1em \includegraphics[width=\extblockscale{1.4\linewidth}]{support.pdf}\end{center}
+    #+latex: \small And many more ...\\
+    #+latex:\mbox{}~~~~~~~\tiny\url{www.softwareheritage.org/support/testimonials}
+*** Donors, members, sponsors                                       :B_block:
+    :PROPERTIES:
+    :CUSTOM_ID: sponsors
+    :BEAMER_COL: .5
+    :BEAMER_env: block
+    :END:
+   #+LATEX: \begin{center}\includegraphics[width=\extblockscale{.4\linewidth}]{inria-logo-new}\end{center}
+   #+LATEX: \begin{center}
+   # #+LATEX: \includegraphics[width=\extblockscale{.2\linewidth}]{sponsors-levels.pdf}
+   #+LATEX: \colorbox{white}{\includegraphics[width=\extblockscale{1.4\linewidth}]{sponsors.pdf}}
+   #+LATEX: \end{center}
+#   - sponsoring / partnership :: \hfill \url{sponsorship.softwareheritage.org}
+*** :B_ignoreheading:
+    :PROPERTIES:
+    :BEAMER_env: ignoreheading
+    :END:
+*** Research collaboration                              :B_picblock:noexport:
+  :PROPERTIES:
+  :BEAMER_COL: .5
+  :BEAMER_env: picblock
+  :BEAMER_OPT: pic=Qwant_Logo, leftpic=true
+  :END:
+    source code search engine
+*** See more                                                       :noexport:
+    \hfill\tiny\url{http:://www.softwareheritage.org/support/testimonials}
+*** Global network                                      :B_picblock:noexport:
+    :PROPERTIES:
+    :BEAMER_COL: .5
+    :BEAMER_env: picblock
+    :BEAMER_OPT: pic=fossid, leftpic=true, width=.3\linewidth
+    :END:
+     - first *independent mirror*
+     - increased reliability
+** Become a partner
+** Ambassadors program
+
+* END
+  \end{document}
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