fix : set XDG_CACHE_HOME=/tmp/nix-shell.mNvbUY for LaTeX & avoid doc/latex/ dir & add missing lato font dependency

Author: thomaslepoix

default.nix

@@ -12,6 +12,7 @@
 , wrapQtAppsHook
 , fetchzip
 , runCommand
+, withDoc ? true
 , withPortabilityTweaks ? false
 }:
 
@@ -45,7 +46,7 @@ stdenv.mkDerivation {
     wrapQtAppsHook
     pdf2svg
     (texlive.combine {
-      inherit (texlive) scheme-small standalone pgfplots unicode-math;
+      inherit (texlive) scheme-small standalone pgfplots unicode-math lato;
       # https://ctan.org/tex-archive/fonts/lete-sans-math
       # TODO use buildTeXLivePackage
 #      lete-sans-math = pkgs.texlivePackages.buildTeXLivePackage {
@@ -102,6 +103,11 @@ stdenv.mkDerivation {
     export CPM_DISABLE=ON
   '';
 
+  postBuild = lib.optionals withDoc ''
+    export XDG_CACHE_HOME=$TMPDIR
+    make doc
+  '';
+
   postInstall = lib.optionals stdenv.hostPlatform.isWindows ''
     mkdir -p $out/bin/platforms
     ln -t $out/bin/platforms -s ${qtbase}/lib/qt-6/plugins/platforms/qwindows.dll

doc/CMakeLists.txt

@@ -3,8 +3,7 @@ add_custom_target( doc )
 if( CMakeUtils_Latex_FOUND AND PDF2SVG )
 	compile_latex_file( "interval"
 		OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/interval.svg"
-		SOURCE "${CMAKE_CURRENT_SOURCE_DIR}/latex"
-		TEXINPUTS "${CMAKE_CURRENT_SOURCE_DIR}/latex"
+		TEXINPUTS "${CMAKE_CURRENT_SOURCE_DIR}"
 		REGISTER_TO "INTERVAL_FILES"
 		SHELL_ESCAPE
 		)
@@ -15,7 +14,7 @@ configure_file_build_time(
 	"${CMAKE_CURRENT_BINARY_DIR}/interval.md"
 	@ONLY
 	VARS
-		INTERVAL_SVG "./latex/interval.svg"
+		INTERVAL_SVG "./interval.svg"
 	)
 
 add_custom_target( interval