fix(deps): Check for required curl dependency on configure

Makefile.am

@@ -261,13 +261,14 @@ CLEANFILES += .docker_deps
 .docker_deps: hooks/build
 	$(SHELL) -c 'source <($(SED) -nE "/^(RUN|'"'"')/{s/.*=/echo /;p}" $<)' | \
 		tr ' ' '\n' | \
-		sort > $@
+		$(SORT) > $@
 
 CLEANFILES += .aur_deps
 .aur_deps:
-	curl -Ls 'https://aur.archlinux.org/cgit/aur.git/plain/.SRCINFO?h=casile-git' | \
+	$(CURL) -Ls 'https://aur.archlinux.org/cgit/aur.git/plain/.SRCINFO?h=casile-git' | \
 		$(SED) -nE '/\bdepends =/{s/.*= //;p}' | \
 		$(GREP) -v 'so.$$' | \
+		$(SORT) > $@
 
 define docker_push =
 	test -z "$(DOCKER_PAT)" || \

configure.ac

@@ -16,6 +16,8 @@ AC_PROG_GREP
 AC_PROG_SED
 
 AX_PROGVAR([cmp])
+AX_PROGVAR([curl])
+AX_PROGVAR([sort])
 AX_PROGVAR([xargs])
 
 AC_ARG_ENABLE([dependency-checks],
@@ -91,6 +93,7 @@ AS_IF([test "x$enable_dependency_checks" != "xno"], [
     AX_PROGVAR([bc])
     AX_PROGVAR([cmp])
     AX_PROGVAR([cut])
+    AX_PROGVAR([curl])
     AX_PROGVAR([entr])
     AX_PROGVAR([epubcheck])
     AX_PROGVAR([fcconflist], [fc-conflist])

hooks/build

@@ -5,7 +5,7 @@ set -e
 
 REVISION=$(git describe --long --tags | sed 's/^v//;s/\([^-]*-g\)/r\1/;s/-/./g')
 
-RUNTIME_DEPS='bc bcprov entr epubcheck fontconfig ghostscript git git-warp-time imagemagick inetutils'\
+RUNTIME_DEPS='bc bcprov curl entr epubcheck fontconfig ghostscript git git-warp-time imagemagick inetutils'\
 ' inkscape java-commons-lang jq kindlegen libertinus-font libgit2 m4 make mdbook moreutils nodejs procps-ng'\
 ' pandoc-sile-git pcre pdftk podofo poppler povray sile sqlite'\
 ' tex-gyre-fonts texlive-core ttf-hack yq zint zola zsh'\

rules/casile.mk.in

@@ -28,6 +28,7 @@ SHELL := $(CASILEDIR)/make-shell.zsh
 AWK ?= @AWK@
 BC ?= @BC@
 CMP ?= @CMP@
+CURL ?= @CURL@
 CUT ?= @CUT@
 EGREP ?= @EGREP@
 ENTR ?= @ENTR@

rules/rules.mk

@@ -1403,7 +1403,7 @@ $(BUILDDIR)/%-$(_verses)-$(_sorted).json: $(BUILDDIR)/%-$(_verses).json
 
 $(BUILDDIR)/%-$(_verses)-$(_text).yml: $(BUILDDIR)/%-$(_verses)-$(_sorted).json
 	$(JQ) -M -e -r 'map_values(.osis) | _nwise(100) | join(";")' $< |
-		$(XARGS) -n1 -iX curl -s -L "https://sahneleme.incil.info/api/X" |
+		$(XARGS) -n1 -iX $(CURL) -s -L "https://sahneleme.incil.info/api/X" |
 		# Because yq doesn't --slurp JSON, see https://github.com/kislyuk/yq/issues/56
 		$(JQ) -s '[.]' | $(YQ) -M -e -y ".[0][] | map_values(.scripture)" |
 		$(GREP) -v '^---$$' |