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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 in bibliographies with the biblatex-software package
+#+SUBTITLE: 
+#+AUTHOR: Roberto Di Cosmo
+#+EMAIL: roberto@dicosmo.org @rdicosmo @swheritage
+#+BEAMER_HEADER: \date{May 5th, 2020}
+#+BEAMER_HEADER: \title[The \texttt{biblatex-software} package]{Software in bibliographies with the \texttt{biblatex-software} package}
+#+BEAMER_HEADER: \author[Roberto Di Cosmo \hspace{5em} www.dicosmo.org]{Roberto Di Cosmo\\[2em]}
+# #+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}
+#+LATEX_HEADER: \usepackage[anythingbreaks]{breakurl}
+
+#
+# If you want to change the title logo it's here
+#
+# +BEAMER_HEADER: \titlegraphic{\includegraphics[width=0.7\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
+** Software at Inria
+*** Inria (https://www.inria.fr)
+     - French national research institution for digital sciences (CS, applied Maths, ...)
+     - some 2000 researchers in 200 teams
+     - over 1000 open source software developed and distributed over 50 years
+#+BEAMER: \pause
+*** The software citation working group
+    - Contributors :: Pierre Alliez, Roberto Di Cosmo, Benjamin Guedj, Alain Girault, Mohand-Said Hacid, Arnaud Legrand, Xavier Leroy, Nicolas Rougier, Manuel Serrano
+    - Outputs ::
+      + P. Alliez, R. Di Cosmo, B. Guedj, A. Girault, M. Hacid, A. Legrand, N. Rougier, [[https://dx.doi.org/10.1109/MCSE.2019.2949413][\emph{Attributing and Referencing (Research) Software: Best Practices and Outlook From Inria}]], Computing in Science and Engineering, 22 (1), 2020. DOI: 10.1109/MCSE.2019.2949413
+      + ~biblatex-software~ : software bibitems for BibLaTeX
+** BibTeX/BibLaTeX reminder
+*** BibTeX 
+    Bibliographic format widely used in the scholarly world by LaTeX users to
+    store and exchange bibliographic information.
+
+    At Inria it is used to generate bibliographies for the activity reports of 200 teams
+*** BibLaTeX
+    Modern LaTeX package (and tool set) that produces rich bibliographies from BibTeX entries
+*** State of software:
+    No support for software in BibTeX/BibLaTeX up to now:
+    - BibLaTeX has a ~@software~ bibitem, that is treated like ~@misc~
+
+** biblatex-software: new entries
+*** Four new bibliographic entries
+    - @software :: Computer software.
+
+     /Required fields:/ ~author~ / ~editor~, ~title~, ~url~, ~year~
+#+BEAMER: \pause
+    - @softwareversion :: A specific version of a software.
+
+     /Required fields:/ ~author~ / ~editor~, ~title~, ~url~, ~version~, ~year~
+#+BEAMER: \pause
+
+    - @softwaremodule :: A specific module of a larger software project.
+
+     /Required fields:/ ~author~, ~subtitle~, ~url~, ~year~
+
+#+BEAMER: \pause
+    - @codefragment :: A code fragment (e.g. a specific algorithm in a program or library).
+
+     /Required fields:/  ~url~
+#+BEAMER: \pause
+
+*** Inheritance
+  *softwareversion*, *softwaremodule* and *codefragment* entries can inherit
+  missing fields from entries designated via the /crossref/ field
+
+** biblatex-software: new fields
+*** Four new software-specific fields
+   - license :: list (literal). The license/s of the title in SPDX format.
+   - introducedin :: field (literal). If this is a software module or fragment,
+       the version of the containing project where it has been first introduced.
+   - repository :: field (uri). The url of the code repository (e.g on GitHub, GitLab).
+   - swhid :: field (verbatim). The identifier of the digital
+       object (a.k.a the software artifact itself). The intrinsic identifier
+       of the item is an swh-id (swh:cnt for a content, swh:dir for a directory, swh:rev for
+       a revision, swh:rel for a release, etc.). See [[https://docs.softwareheritage.org/devel/swh-model/persistent-identifiers.html][the SWH-ID specification]].
+#+BEAMER: \pause
+*** Two more new software-specific fields for HAL
+   - ~hal_id~ :: field (verbatim). A digital identifier for the 
+       software record including its description and metadata on HAL.
+   - ~hal_version~ :: field (verbatim). The version of the HAL software record.
+
+
+
+  
+** biblatex-software: new options
+*** Five new options to control typesetting of software related entries
+   - swlabels=true|false :: add a special label for software entries
+   - license=true|false :: show license information
+   - halid=true|false :: show the HAL identifier
+   - swhid=true|false :: show the SWHID identifier
+   - vcs=true|false :: show the repository URL
+
+** Examples are worth a thousand words
+#+LATEX: \tiny
+#+BEGIN_SRC bibtex
+ @software {cgal,
+  title = {The Computational Geometry Algorithms Library},
+  author = {{The CGAL Project}},
+  editor = {{CGAL Editorial Board}},
+  year = 1996,
+  url = {https://cgal.org/}
+ }
+
+ @softwareversion{cgal:5-0-2,
+  crossref = {cgal},
+  version = {{5.0.2}},
+  url = {https://docs.cgal.org/5.02},
+  year = 2020,
+  swhid = {swh:1:rel:636541bbf6c77863908eae744610a3d91fa58855;
+           origin=https://github.com/CGAL/cgal/}
+ }
+
+ @softwaremodule{cgal:lp-gi-20a,
+  crossref = {cgal:5-0-2},
+  author = {Menelaos Karavelas},
+  subtitle = {{2D} Voronoi Diagram Adaptor},
+  license = {GPL},
+  introducedin = {cgal:3-1},
+  url = {https://doc.cgal.org/5.0.2/Manual/packages.html#PkgVoronoiDiagram2},
+ }
+#+END_SRC