gravy.sty

\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{gravy}

\newif\if@gravy@nodate\@gravy@nodatefalse
\DeclareOption{nodate}{
  \@gravy@nodatetrue
}

\newif\if@gravy@minted\@gravy@mintedfalse
\DeclareOption{minted}{
  \@gravy@mintedtrue
}

\ProcessOptions*

% koma-script inserts the date using {\usekomafont{date}{\@date \par}} followed by a 1em \vskip
% subtract:
% - 1em for the height of the date itself
% - 1em for the space added afterwards
% - one \parskip for the space added by \par
\if@gravy@nodate
  \date{~\vspace{-2em \@minus \parskip}}
\fi

% theorems
% loads amsthm, so it needs to be loaded before newtxmath math fonts (https://tex.stackexchange.com/a/520114)
\RequirePackage{gravytheorems}

% font setup
\RequirePackage[T1]{fontenc}

\RequirePackage{libertine}
\RequirePackage[libertine]{newtxmath}
\RequirePackage[scaled=0.83]{FiraMono}

% page setup
\KOMAoptions{
  paper=letter,
  usegeometry,
}

\RequirePackage{geometry}
\if@twoside
  \geometry{
    inner=99pt,outer=165pt,
    top=84pt,
    bottom=156pt
  }
\else
  \geometry{
    paper=letterpaper,
    hmargin=132pt,
    top=84pt,
    bottom=156pt
  }
\fi

% improve ligature copy-pasting
% see: https://tex.stackexchange.com/a/64191
\pdfgentounicode=1
\input{glyphtounicode}

% hanging heading numbers
\renewcommand\sectionlinesformat[4]{%
  \makebox[0pt][r]{#3}{#4}%
}
\ifdefined\chapterlinesformat
  \renewcommand\chapterlinesformat[3]{%
    \makebox[0pt][r]{#2}#3%
  }
\fi

% list formatting
\RequirePackage{enumitem}
\setlist[itemize,enumerate,1]{leftmargin=0pt}
\setlist[itemize,3]{label=\textopenbullet}
\setlist{listparindent=\parindent,noitemsep}

\AtBeginDocument{
  \ifdim\parskip=0pt
    \setlist*{topsep=0.5em}
  \fi
}

% typography
\RequirePackage{microtype}

% footer
\RequirePackage{scrlayer-scrpage}
\pagestyle{scrheadings}

\setkomafont{pagefoot}{\normalfont\sffamily}

\ihead[]{}
\chead[]{}
\ohead[]{}
\if@chapter
  \automark[section]{chapter}
  \ifoot[]{\headmark}
\else
  \ifoot[]{\@title}
\fi
\cfoot[]{}
\ofoot[\pagemark]{\pagemark}

% math
\RequirePackage{mathtools}
\RequirePackage{esint}

% vocab
\RequirePackage{gravycolors}

\newcommand{\vocab}[1]{%
  \textbf{\color{gravy@vocab}#1}%
}

% hyperlinks
\RequirePackage[pdfusetitle]{hyperref}

\hypersetup{
  linktoc=all,
  colorlinks=true,
  urlcolor=gravy@blue,
  linkcolor=gravy@blue,
  citecolor=gravy@green,
  addtopdfcreator=gravy,
}

\RequirePackage{gravycommands}

\if@gravy@minted
  \RequirePackage{gravyminted}
\fi