Initial commit

.gitignore

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+# Created by https://www.toptal.com/developers/gitignore/api/direnv,latex
+# Edit at https://www.toptal.com/developers/gitignore?templates=direnv,latex
+
+### direnv ###
+.direnv
+.envrc
+
+### LaTeX ###
+## Core latex/pdflatex auxiliary files:
+*.aux
+*.lof
+*.log
+*.lot
+*.fls
+*.out
+*.toc
+*.fmt
+*.fot
+*.cb
+*.cb2
+.*.lb
+
+## Intermediate documents:
+*.dvi
+*.xdv
+*-converted-to.*
+# these rules might exclude image files for figures etc.
+# *.ps
+# *.eps
+# *.pdf
+
+## Generated if empty string is given at "Please type another file name for output:"
+.pdf
+
+## Bibliography auxiliary files (bibtex/biblatex/biber):
+*.bbl
+*.bcf
+*.blg
+*-blx.aux
+*-blx.bib
+*.run.xml
+
+## Build tool auxiliary files:
+*.fdb_latexmk
+*.synctex
+*.synctex(busy)
+*.synctex.gz
+*.synctex.gz(busy)
+*.pdfsync
+
+## Build tool directories for auxiliary files
+# latexrun
+latex.out/
+
+## Auxiliary and intermediate files from other packages:
+# algorithms
+*.alg
+*.loa
+
+# achemso
+acs-*.bib
+
+# amsthm
+*.thm
+
+# beamer
+*.nav
+*.pre
+*.snm
+*.vrb
+
+# changes
+*.soc
+
+# comment
+*.cut
+
+# cprotect
+*.cpt
+
+# elsarticle (documentclass of Elsevier journals)
+*.spl
+
+# endnotes
+*.ent
+
+# fixme
+*.lox
+
+# feynmf/feynmp
+*.mf
+*.mp
+*.t[1-9]
+*.t[1-9][0-9]
+*.tfm
+
+#(r)(e)ledmac/(r)(e)ledpar
+*.end
+*.?end
+*.[1-9]
+*.[1-9][0-9]
+*.[1-9][0-9][0-9]
+*.[1-9]R
+*.[1-9][0-9]R
+*.[1-9][0-9][0-9]R
+*.eledsec[1-9]
+*.eledsec[1-9]R
+*.eledsec[1-9][0-9]
+*.eledsec[1-9][0-9]R
+*.eledsec[1-9][0-9][0-9]
+*.eledsec[1-9][0-9][0-9]R
+
+# glossaries
+*.acn
+*.acr
+*.glg
+*.glo
+*.gls
+*.glsdefs
+*.lzo
+*.lzs
+*.slg
+*.slo
+*.sls
+
+# uncomment this for glossaries-extra (will ignore makeindex's style files!)
+# *.ist
+
+# gnuplot
+*.gnuplot
+*.table
+
+# gnuplottex
+*-gnuplottex-*
+
+# gregoriotex
+*.gaux
+*.glog
+*.gtex
+
+# htlatex
+*.4ct
+*.4tc
+*.idv
+*.lg
+*.trc
+*.xref
+
+# hyperref
+*.brf
+
+# knitr
+*-concordance.tex
+# TODO Uncomment the next line if you use knitr and want to ignore its generated tikz files
+# *.tikz
+*-tikzDictionary
+
+# listings
+*.lol
+
+# luatexja-ruby
+*.ltjruby
+
+# makeidx
+*.idx
+*.ilg
+*.ind
+
+# minitoc
+*.maf
+*.mlf
+*.mlt
+*.mtc[0-9]*
+*.slf[0-9]*
+*.slt[0-9]*
+*.stc[0-9]*
+
+# minted
+_minted*
+*.pyg
+
+# morewrites
+*.mw
+
+# newpax
+*.newpax
+
+# nomencl
+*.nlg
+*.nlo
+*.nls
+
+# pax
+*.pax
+
+# pdfpcnotes
+*.pdfpc
+
+# sagetex
+*.sagetex.sage
+*.sagetex.py
+*.sagetex.scmd
+
+# scrwfile
+*.wrt
+
+# svg
+svg-inkscape/
+
+# sympy
+*.sout
+*.sympy
+sympy-plots-for-*.tex/
+
+# pdfcomment
+*.upa
+*.upb
+
+# pythontex
+*.pytxcode
+pythontex-files-*/
+
+# tcolorbox
+*.listing
+
+# thmtools
+*.loe
+
+# TikZ & PGF
+*.dpth
+*.md5
+*.auxlock
+
+# titletoc
+*.ptc
+
+# todonotes
+*.tdo
+
+# vhistory
+*.hst
+*.ver
+
+# easy-todo
+*.lod
+
+# xcolor
+*.xcp
+
+# xmpincl
+*.xmpi
+
+# xindy
+*.xdy
+
+# xypic precompiled matrices and outlines
+*.xyc
+*.xyd
+
+# endfloat
+*.ttt
+*.fff
+
+# Latexian
+TSWLatexianTemp*
+
+## Editors:
+# WinEdt
+*.bak
+*.sav
+
+# Texpad
+.texpadtmp
+
+# LyX
+*.lyx~
+
+# Kile
+*.backup
+
+# gummi
+.*.swp
+
+# KBibTeX
+*~[0-9]*
+
+# TeXnicCenter
+*.tps
+
+# auto folder when using emacs and auctex
+./auto/*
+*.el
+
+# expex forward references with \gathertags
+*-tags.tex
+
+# standalone packages
+*.sta
+
+# Makeindex log files
+*.lpz
+
+# xwatermark package
+*.xwm
+
+# REVTeX puts footnotes in the bibliography by default, unless the nofootinbib
+# option is specified. Footnotes are the stored in a file with suffix Notes.bib.
+# Uncomment the next line to have this generated file ignored.
+#*Notes.bib
+
+### LaTeX Patch ###
+# LIPIcs / OASIcs
+*.vtc
+
+# glossaries
+*.glstex
+
+# End of https://www.toptal.com/developers/gitignore/api/direnv,latex
+
+
+### lualatex ###
+luatex.*/

flake.lock

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+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1757020766,
+        "narHash": "sha256-PLoSjHRa2bUbi1x9HoXgTx2AiuzNXs54c8omhadyvp0=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "fe83bbdde2ccdc2cb9573aa846abe8363f79a97a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-25.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+description = "LaTeX Beamer Presentation for GPUL Schools: Software Libre";
+  inputs = {
+    nixpkgs.url = github:NixOS/nixpkgs/nixos-25.05;
+    flake-utils.url = github:numtide/flake-utils;
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let pkgs = nixpkgs.legacyPackages.${system}; in
+      {
+        devShells.default = pkgs.mkShell {
+          buildInputs = with pkgs; [
+            texstudio
+            texlive.combined.scheme-full
+          ];
+        };
+      }
+    );
+}

main.tex

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+\documentclass{beamer}
+\usepackage[spanish]{babel}
+\usetheme{Madrid}
+
+\usepackage[backend=biber, language=auto]{biblatex}
+\usepackage{csquotes}
+\addbibresource{references.bib}
+
+\usepackage{graphicx}
+\usepackage{emoji}
+
+\title{Software Libre}
+
+\subtitle{¿Por qué é tan importante?}
+
+\author{Pedro Rey Anca}
+
+\institute[GPUL]{Grupo de Programadores e Usuarios de Linux}
+
+\date{GPUL Schools 25/26}
+
+\logo{\includegraphics[height=1cm]{logo-gpul.png}}
+
+\begin{document}
+	
+	\frame{\titlepage}
+	
+	\begin{frame}
+		\frametitle{Table of Contents}
+		\tableofcontents
+	\end{frame}
+	
+	\section{Definicións}
+	\subsection{Software Libre}
+	\begin{frame}
+		\frametitle{Que é?}
+		
+		\begin{block}{Software Libre}
+			É o que respecta a \textbf{liberdade} dos usuarios e da comunidade. A grandes trazos, significa que os usuarios teñen a liberdade de \textbf{executar, copiar, distribuír, estudar, modificar e mellorar} o software. É dicir, o «software libre» é unha cuestión de \textbf{liberdade, non de prezo}.
+			
+			 -- \textbf{Definición da FSF} (Free Software Foundation) \cite{gnu_free_sw}
+		\end{block}
+		
+		\vspace{0.5em}
+		\begin{center}
+			\includegraphics[width=0.7\linewidth]{logo-fsf.org}
+		\end{center}
+	\end{frame}
+	
+	\subsection{Open source}
+	\begin{frame}
+	\frametitle{Open source $\neq$ Libre}
+	
+	\begin{block}{Código aberto}
+		Software cuxo \textbf{código fonte está dispoñible publicamente} para que calquera poda consultalo.
+	\end{block}
+	
+	\begin{itemize}
+		\item Enfoque nos beneficios do desenvolvemento colaborativo de software e non nas cuestións máis \textit{filosóficas}.
+	\end{itemize}
+	
+	\vspace{0.5em}
+	\begin{center}
+		\includegraphics[width=0.6\linewidth]{logo-osi.png}
+	\end{center}
+	
+	\cite{gnu_open_source}
+	\cite{open_source_def}
+	\end{frame}
+	
+	\subsection{GNU/Linux}
+	\begin{frame}
+	\frametitle{Linux \emoji{heart} Free Software}
+	
+	\begin{block}{Linux}
+		É un núcleo (\textit{kernel}) de sistema operativo de código aberto. Foi un dos primeiros proxectos de software libre é un dos máis populares.
+	\end{block}
+	
+	\begin{itemize}
+		\item Linux é moi usado. Principalmente en \textbf{servidores}.
+		\begin{itemize}
+			\item \textit{Works with Linux}: \textbf{Android}, Roomba, Tesla, Steam Deck, \textbf{Supercomputadores}, Routers, IOT...
+		\end{itemize}
+	\end{itemize}
+	
+	\vspace{0.5em}
+	\begin{center}
+		\includegraphics[width=0.2\linewidth]{tux.png}
+	\end{center}
+	\end{frame}
+	
+	\begin{frame}
+		\frametitle{Por que é GNU/Linux e non só Linux???}
+		
+		\begin{center}
+			\huge \textbf{GNU + Linux = \emoji{sparkles}}
+		\end{center}
+		
+		\begin{block}{GNU}
+			GNU (GNU's Not Unix) é unha colección de software libre que proporciona ferramentas e utilidades esenciais para un sistema operativo completo.
+		\end{block}
+		
+		\begin{itemize}
+			\item A combinación do núcleo Linux e das ferramentas GNU crea un sistema operativo totalmente funcional.
+			\item Moitos usuarios interactúan co sistema a través das utilidades GNU, facendo que GNU sexa unha parte crucial da experiencia.
+		\end{itemize}
+		
+		\vspace{0.5em}
+		\begin{center}
+			\includegraphics[width=0.2\linewidth]{logo-gnu.png}
+		\end{center}
+		
+		\vspace{-2em}
+		\cite{gnu_linux}
+	\end{frame}
+	
+	\begin{frame}
+		\frametitle{Que facer despois desta charla?}
+		\begin{itemize}
+			\item<1-> A
+			\item<2-> B
+			\item<3-> C
+			\item<4-> D
+		\end{itemize}
+	\end{frame}
+	
+	\begin{frame}[allowframebreaks]
+		\frametitle{Referencias}
+		\printbibliography
+	\end{frame}
+	
+	
+\end{document}

references.bib

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+@online{gnu_free_sw,
+	author       = {GNU \& FSF},
+	title        = {The Free Software Definition},
+	url          = {https://www.gnu.org/philosophy/free-sw.en.html},
+	urldate      = {2025-08-31}
+}
+
+@online{gnu_open_source,
+	author = {Richard Stallman (GNU)},
+	title = {Why Open Source Misses the Point of Free Software},
+	url = {https://www.gnu.org/philosophy/open-source-misses-the-point.html},
+	urldate = {2025-08-31}
+}
+
+@online{open_source_def,
+	author = {Open Source Initiative},
+	title = {The Open Source Definition},
+	url = {https://opensource.org/osd},
+	urldate = {2025-08-31}
+}
+
+@online{gnu_linux,
+	author = {Richard Stallman (GNU)},
+	title = {Linux and the GNU System},
+	url = {https://www.gnu.org/gnu/linux-and-gnu.html},
+	urldate = {2025-08-31}
+}