Use extractbb instead of ebb

ebb was the old tool and looks like it is on its way out, a very least
from Debian and for pdfTeX.

From manpage:
-------------
 Here are more details about the bb and xbb formats:

 The original  ebb  (from dvipdfm) ignored density information in bitmap
 images, and generated bounding boxes with 100px = 72bp = 1in.  Unfortu‐
 nately, screenshots (especially) tend to look bad with this approach.

 So, extractbb (from dvipdfmx) uses density information if present.
 Otherwise, it generates bounding box with 100px = 100bp.  This is what
 pdfTeX does.

book/makefile

@@ -97,7 +97,7 @@ ruby_pkg := ../website/Gemfile ../website/Gemfile.lock
 	figures/export_figures.sh $@.pdf
 
 %.xbb: %.jpg
-	ebb -x $<
+	extractbb -x $<
 # }}}
 
 # Pdf {{{
@@ -202,27 +202,6 @@ bw_ebook: epub/bw_book.epub
 low_res_ebook: epub/low_res_book.epub
 # }}}
 
-# Old target names are disabled with helpful help message {{{
-build_pdf:
-	@echo "build_pdf target is not supported anymore, please use make pdf"
-	@exit
-build_serif_pdf:
-	@echo "build_serif_pdf target is not supported anymore, please use make serif"
-	@exit
-build_sans_serif_pdf:
-	@echo "build_sans_serif_pdf target is not supported anymore, please use make sans_serif"
-	@exit
-build_ebook:
-	@echo "build_ebook target is not supported anymore, please use make ebook"
-	@exit
-build_bw_ebook:
-	@echo "build_bw_ebook target is not supported anymore, please use make bw_ebook"
-	@exit
-build_low_res_ebook:
-	@echo "build_low_res_ebook target is not supported anymore, please use make low_res_ebook"
-	@exit
-# }}}
-
 # Top level releases rules {{{
 .PHONY: bake release_serif release_sans_serif
 bake: release_serif release_sans_serif website
@@ -326,7 +305,8 @@ help:
 	@echo "figures: build TikZ figures only"
 	@echo ""
 	@echo "Quick builds:"
-	@echo "  quick: compiles serif_pdf but runs lulatex only once"
+	@echo "  quick: compiles serif but runs lulatex only once"
+	@echo "         will halt on first error"
 	@echo "  quick_ebook: compiles ebook but runs lulatex only once"
 	@echo ""
 	@echo "Checks:"

book/tex4ebook.cfg

@@ -19,27 +19,4 @@
     font-family: 'Open Sans';
   }
 </style>}}
-
-% Deal with chemical equations in a single svg
-\ExplSyntaxOn
-\def\standaloneenv#1{}
-\pend:def\schemestart{\Picture+{}}
-\append:def\CF_schemestop{\EndPicture}
-\ExplSyntaxOff
-\makeatletter
-\def\texfourht@tikz@begin{
-  \protect\csname nested:math\endcsname% support display math
-  \Picture+[\csname a:Picture-alt\endcsname]{}%
-}
-\makeatother
-
-% Warnig from Michal: Note that once you get the updated TeX Live with a new
-% `chemfig.4ht` file, you can remove this from the config file:
-%
-%```latex \pend:def\schemestart{\Picture+{}}
-%\append:def\CF_schemestop{\EndPicture} ```
-%
-%You could get an error otherwise, as there would be nested `\Picture+{}` and
-%`\EndPicture` commands.
-
 \EndPreamble

book/website.cfg

@@ -47,17 +47,5 @@
 }
 \ConfigureToc{loc}{\HCode{<span class="lofToc">}}{\ }{}{\HCode{</span><br />}}
 
-\ExplSyntaxOn
-\def\standaloneenv#1{}
-\pend:def\schemestart{\Picture+{}}
-\append:def\CF_schemestop{\EndPicture}
-\ExplSyntaxOff
-\makeatletter
-\def\texfourht@tikz@begin{
-  \protect\csname nested:math\endcsname% support display math
-  \Picture+[\csname a:Picture-alt\endcsname]{}%
-}
-\makeatother
-
 \begin{document}
 \EndPreamble

makefile

@@ -1,11 +1,11 @@
-.DEFAULT_GOAL := build_pdf
+.DEFAULT_GOAL := pdf
 
 DOCKER_IMAGE := ghcr.io/hendricius/the-sourdough-framework
 DOCKER_CMD := docker run --rm -it -v $(PWD):/opt/repo --platform linux/x86_64 $(DOCKER_IMAGE) /bin/bash -c
 
-.PHONY: bake build_pdf build_docker_image push_docker_image validate website
+.PHONY: build_docker_image push_docker_image
 .PHONY: print_os_version start_shell printvars show_tools_version mrproper
-.PHONY: build_serif_pdf build_ebook
+.PHONY: ebook serif website bake
 
 # Dockers targets
 build_docker_image:
@@ -15,8 +15,8 @@ push_docker_image: build_docker_image
 	docker push $(DOCKER_IMAGE):latest
 
 # Books/website
-serif_pdf:
-	$(DOCKER_CMD) "cd /opt/repo/book && make serif_pdf"
+serif:
+	$(DOCKER_CMD) "cd /opt/repo/book && make serif"
 
 ebook:
 	$(DOCKER_CMD) "cd /opt/repo/book && make ebook"
@@ -45,8 +45,3 @@ print_os_version:
 
 start_shell:
 	docker run -it -v $(PWD):/opt/repo $(DOCKER_IMAGE) /bin/bash
-
-# Old names for backward compatibility
-build_serif_pdf: serif_pdf
-build_ebook: ebook
-build_pdf: pdf