diff --git a/talks-public/2022-12-07-rennes-ens/2022-12-07-rennes-ens.org b/talks-public/2022-12-07-rennes-ens/2022-12-07-rennes-ens.org
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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: Software Heritage
+#+SUBTITLE: Analyzing the Global Graph of Public Software Development
+#+BEAMER_HEADER: \date[2022-10-07, ENS Rennes]{7 Oct 2022\\ENS Rennes}
+#+AUTHOR: Stefano Zacchiroli
+#+DATE: 7 Oct 2022
+#+EMAIL: stefano.zacchiroli@telecom-paris.fr
+
+#+INCLUDE: "../../common/modules/prelude-toc.org" :minlevel 1
+#+INCLUDE: "../../common/modules/169.org"
+#+BEAMER_HEADER: \institute[Télécom Paris]{Télécom Paris, Institut Polytechnique de Paris\\ {\tt stefano.zacchiroli@telecom-paris.fr}}
+# #+BEAMER_HEADER: \title[Software Heritage]{Software Heritage: Analyzing the Global Graph of Public Software Development}
+#+BEAMER_HEADER: \author{Stefano Zacchiroli}
+
+* Preface                                                   :B_ignoreheading:
+** About the speaker
+  :PROPERTIES:
+  :CUSTOM_ID: bio
+  :END:
+*** 
+    - Professor of Computer Science, Télécom Paris, Institut Polytechnique de
+      Paris
+    - Free/Open Source Software activist (20+ years)
+    - Debian Developer & Former 3x Debian Project Leader
+    - Former Open Source Initiative (OSI) director
+    - Software Heritage co-founder & CTO
+* The Software Commons
+** Software is everywhere (and a key mediator) in society
+#+latex: \begin{center}
+#+ATTR_LATEX: :width .7\linewidth
+file:software-center.pdf
+#+latex: \end{center}
+# #+INCLUDE: "../../common/modules/foss-commons.org::#freeswdef"
+** Free/Open Source Software (FOSS) is everywhere as well
+*** Free Software (1986)
+    :PROPERTIES:
+    :BEAMER_env: definition
+    :END:
+    A program is *free software* if the program's users have the four
+    /essential freedoms/:
+    - Freedom #0, to *run* the program, for any purpose
+    - Freedom #1, to *study* how the program works, and change it
+    - Freedom #2, to *redistribute* copies
+    - Freedom #3, to *improve* the program, and *release* improvements
+# #+INCLUDE: "../../common/modules/foss-commons.org::#commonsdef"
+*** linebreak                                               :B_ignoreheading:
+    :PROPERTIES:
+    :BEAMER_env: ignoreheading
+    :END:
+Current estimates: 99% of software products on the market contains at least
+/some/ free software parts (Synopsis 2020).
+** The Commons and FOSS
+*** Definition (Commons)
+    The *commons* is the cultural and natural resources accessible to all
+    members of a society, including natural materials such as air, water, and a
+    habitable earth. These resources are held in common, not owned privately.
+*** Definition (Software Commons)
+    The *software commons* consists of all computer software which is available
+    at little or no cost and which can be altered and reused with few
+    restrictions. Thus /all open source software and all free software are part
+    of the [software] commons/. […]
+*** linebreak                                               :B_ignoreheading:
+    :PROPERTIES:
+    :BEAMER_env: ignoreheading
+    :END:
+  Kranich and Schement (2008); Schweik and English (2012).
+** Software is dual-form knowledge                                 :noexport:
+#+INCLUDE: "../../common/modules/source-code-different-short.org::#thesourcecode" :only-contents t :minlevel 3
+** Software /source code/ is precious human knowledge
+#+INCLUDE: "../../common/modules/source-code-different-short.org::#softwareisdifferent" :only-contents t :minlevel 3
+** Software source code is fragile
+#+INCLUDE: "../../common/modules/swh-motivations.org::#fragile" :only-contents t :minlevel 3
+* Software Heritage
+#+INCLUDE: "../../common/modules/swh-goals-oneslide-vertical.org::#goals" :minlevel 2
+** Status                                                   :B_ignoreheading:
+   :PROPERTIES:
+   :BEAMER_env: ignoreheading
+   :END:
+#+INCLUDE: "../../common/modules/status-extended.org::#archivinggoals" :minlevel 2
+#+INCLUDE: "../../common/modules/status-extended.org::#architecture" :minlevel 2 :only-contents t
+#+INCLUDE: "../../common/modules/status-extended.org::#merkletree" :minlevel 2
+#+INCLUDE: "../../common/modules/data-model.org::#merklestruct" :minlevel 2
+#+INCLUDE: "../../common/modules/status-extended.org::#dagdetailsmall" :minlevel 2 :only-contents t
+#+INCLUDE: "../../common/modules/status-extended.org::#archive" :minlevel 2
+** Demo time!
+   - Browse [[https://archive.softwareheritage.org][the archive]]
+   - [[https://save.softwareheritage.org][Trigger archival]] of your preferred software in a breeze
+   - Get and use SWHIDs ([[https://docs.softwareheritage.org/devel/swh-model/persistent-identifiers.html][full specification available online]])
+   - The [[https://www.softwareheritage.org/2019/07/20/archiving-and-referencing-the-apollo-source-code/][Apollo 11 AGC source code example]]
+   - Cite software [[https://www.softwareheritage.org/2020/05/26/citing-software-with-style/][with the biblatex-software style]] from CTAN
+   - Example use in a research article: compare Fig. 1 and conclusions 
+      - in [[http://www.dicosmo.org/Articles/2012-DaneluttoDiCosmo-Pcs.pdf][the 2012 version]]
+      - in [[https://www.dicosmo.org/share/parmap_swh.pdf][the updated version]] using SWHIDs and Software Heritage
+#   - Example use in a research article: extensive use of SWHIDs in [[https://www.dicosmo.org/Articles/2020-ReScienceC.pdf][a replication experiment]]
+   - Example in a journal: [[http://www.ipol.im/pub/art/2020/300/][an article from IPOL]]
+   - [[https://doc.archives-ouvertes.fr/en/deposit/deposit-software-source-code/][Curated deposit in SWH via HAL]], see for example: 
+      [[https://hal.archives-ouvertes.fr/hal-02130801][LinBox]], [[https://hal.archives-ouvertes.fr/hal-01897934][SLALOM]], [[https://hal.archives-ouvertes.fr/hal-02130729][Givaro]], [[https://hal.archives-ouvertes.fr/hal-02137040][NS2DDV]], [[https://hal.archives-ouvertes.fr/lirmm-02136558][SumGra]], [[https://hal.archives-ouvertes.fr/hal-02155786][Coq proof]], ...
+   - Rescue landmark legacy software, see the [[https://www.softwareheritage.org/swhap/][SWHAP process with UNESCO]]
+* Research highlights in empirical software engineering
+** Graph dataset
+#+INCLUDE: "../../common/modules/dataset.org::#graphdataset" :only-contents t
+** Graph dataset --- example
+#+INCLUDE: "../../common/modules/dataset.org::#graphquery1" :only-contents t
+** Graph dataset --- example
+#+INCLUDE: "../../common/modules/dataset.org::#graphquery2" :only-contents t
+** License dataset
+#+INCLUDE: "../../common/modules/dataset.org::#licensedataset" :only-contents t
+** The Software Heritage Filesystem (SwhFS)
+#+INCLUDE: "../../common/modules/swh-fuse.org::#oneslide" :only-contents t
+** The Software Heritage Filesystem (SwhFS) --- example
+#+INCLUDE: "../../common/modules/swh-fuse.org::#examplemini" :only-contents t
+** The Software Heritage Filesystem (SwhFS) --- example (cont.)
+#+INCLUDE: "../../common/modules/swh-fuse.org::#tutorial4" :only-contents t
+** Graph compression
+#+INCLUDE: "../../common/modules/graph-compression.org::#oneslide" :only-contents t
+#+INCLUDE: "../../common/modules/graph-compression.org::#background1" :minlevel 2
+#+INCLUDE: "../../common/modules/graph-compression.org::#background2" :minlevel 2
+#+INCLUDE: "../../common/modules/graph-compression.org::#pipeline" :minlevel 2
+** Software provenance and evolution                        :B_ignoreheading:
+   :PROPERTIES:
+   :BEAMER_env: ignoreheading
+   :END:
+#+INCLUDE: "../../common/modules/ese-research.org::#provenance" :minlevel 2 :only-contents t
+** Diversity, equity, and inclusion                         :B_ignoreheading:
+   :PROPERTIES:
+   :BEAMER_env: ignoreheading
+   :END:
+#+INCLUDE: "../../common/modules/ese-research.org::#diversity" :minlevel 2 :only-contents t
+* Conclusion
+** Conclusion
+*** 
+    - Software Heritage archives public code and its history as a huge Merkle DAG
+    - Querying and analyzing it at scale (25/350 B nodes/edges) is an open problem
+    - Gold mine of research leads in and around empirical software engineering
+# *** Expanding archive coverage
+#     - [[https://save.softwareheritage.org/][save.softwareheritage.org]]
+*** Coding
+    - Developer info: [[https://www.softwareheritage.org/community/developers/][www.softwareheritage.org/community/developers]]
+*** Work with us
+    - Open positions (tech & research): [[https://www.softwareheritage.org/jobs/][www.softwareheritage.org/jobs]]
+*** Student opportunities
+    - Internships, GSoC/Outreachy, student grants
+    - [[https://www.softwareheritage.org/community/students/][www.softwareheritage.org/community/students]]
+
+* Appendix                                                       :B_appendix:
+  :PROPERTIES:
+  :BEAMER_env: appendix
+  :END:
+** 
+   \vfill
+   \centerline{\Huge Appendix}
+   \vfill
+
+# #+INCLUDE: "../../common/modules/graph-compression.org::#main" :minlevel 2 :only-contents t
+#+INCLUDE: "../../common/modules/graph-compression.org::#compexp" :minlevel 2
+#+INCLUDE: "../../common/modules/graph-compression.org::#spaceefficiency" :minlevel 2
+#+INCLUDE: "../../common/modules/graph-compression.org::#timeefficiency" :minlevel 2
+#+INCLUDE: "../../common/modules/graph-compression.org::#discussion" :minlevel 2
+
+#+INCLUDE: "../../common/modules/swhid.org::#oneslide" :minlevel 2
+** An international, non profit initiative\hfill built for the long term
+  :PROPERTIES:
+  :CUSTOM_ID: support
+  :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:\begin{center}\tiny\url{www.softwareheritage.org/support/testimonials}\end{center}
+  # #+BEAMER: \pause
+*** 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: \vspace{-1cm}
+   #+LATEX: \begin{center}
+   #+LATEX: \colorbox{white}{\includegraphics[width=\extblockscale{1.4\linewidth}]{sponsors.pdf}}
+   #+LATEX: \end{center}
+   #+latex:\begin{center}\tiny\url{www.softwareheritage.org/support/sponsors}\end{center}
+*** :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
diff --git a/talks-public/2022-12-07-rennes-ens/Makefile b/talks-public/2022-12-07-rennes-ens/Makefile
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+include ../Makefile.slides