fix: nix stuff and config

doerg/our-tex.nix

@@ -0,0 +1,43 @@
+{ texlive
+, syd-plex-latex
+}:
+
+texlive.combine {
+  inherit syd-plex-latex;
+  inherit (texlive)
+    scheme-basic
+    xkeyval
+    changepage
+    fancyhdr
+    geometry
+    natbib
+    paralist
+    placeins
+    ragged2e
+    setspace
+    textcase
+    titlesec
+    xcolor
+    hardwrap
+    xifthen
+    catchfile
+    fontspec
+    latexmk
+    xetex
+    dvisvgm dvipng wrapfig # For Org-mode previews/export.
+    amsmath # Essential for mathematics.
+    spath3 # TikZ dependency?
+    ulem hyperref
+    capt-of
+    pgf # Includes TikZ.
+    tikz-cd # Commutative diagrams w/ TikZ.
+    quiver # Commutative diagrams w/ TikZ & q.uiver.app.
+    bookmark
+    metafont
+    preview # For new-gen org-latex-preview.
+    mylatexformat # For new-gen org-latex-preview.
+    collection-fontsrecommended # Essential fonts.
+    etoolbox # For Org-mode exports.
+    caption
+  ;
+}