Improved TeXLive installation checks

Thanks to the check by Cristina Martínez, some corrections were made when
we attempt to download and install TeXLive. Further checks and corrections
will be in due time.

2 files changed, 48 insertions, 26 deletions

diff --git a/reproduce/src/make/dependencies.mk b/reproduce/src/make/dependencies.mk
index d223f20..0d37146 100644
--- a/reproduce/src/make/dependencies.mk
+++ b/reproduce/src/make/dependencies.mk
@@ -43,13 +43,24 @@ ildir  = $(BDIR)/dependencies/installed/lib
 ilidir = $(BDIR)/dependencies/installed/lib/built
 
 # Define the top-level programs to build (installed in `.local/bin').
-top-level-programs = gs git flock astnoisechisel texlive-ready
-all: $(foreach p, $(top-level-programs), $(ibdir)/$(p))
+top-level-programs = gs git flock astnoisechisel
+all: $(ddir)/texlive-versions.tex \
+     $(foreach p, $(top-level-programs), $(ibdir)/$(p))
 
 # Other basic environment settings: We are only including the host
 # operating system's PATH environment variable (after our own!) for the
 # compiler and linker. For the library binaries and headers, we are only
 # using our internally built libraries.
+#
+# To investigate:
+#
+#    1) Set SHELL to `$(ibdir)/env - NAME=VALUE $(ibdir)/bash' and set all
+#       the parameters defined bellow as `NAME=VALUE' statements before
+#       calling Bash. This will enable us to completely ignore the user's
+#       native environment.
+#
+#    2) Add `--noprofile --norc' to `.SHELLFLAGS' so doesn't load the
+#       user's environment.
 .ONESHELL:
 .SHELLFLAGS              := -ec
 export PATH              := $(ibdir)
@@ -281,32 +292,45 @@ endif
 
 # Since we want to avoid complicating the PATH, we are putting a symbolic
 # link of all the TeX Live executables in $(ibdir). But symbolic links are
-# hard to track for Make (as a target). So we'll make a simple ASCII file
-# called `texlive-ready' when it is complete and use that as a target.
+# hard to track for Make (as a target). Also, TeX in general is optional
+# for the pipeline (the processing is the main target, not the generation
+# of the final PDF). So we'll make a simple ASCII file called
+# `texlive-ready-tlmgr' and use its contents to mark if we can use it or
+# not.
 $(ibdir)/texlive-ready-tlmgr: $(tdir)/install-tl-unx.tar.gz \
                               reproduce/config/pipeline/texlive.conf
 
         # Unpack, enter the directory, and install based on the given
         # configuration (prerequisite of this rule).
-	topdir=$$(pwd)
+	@topdir=$$(pwd)
 	cd $(ddir)
 	rm -rf install-tl-*
 	tar xf $(tdir)/install-tl-unx.tar.gz
 	cd install-tl-*
 	sed -e's|@installdir[@]|$(idir)|g' -e's|@topdir[@]|'"$$topdir"'|g' \
 	    $$topdir/reproduce/config/pipeline/texlive.conf > texlive.conf
-	./install-tl --profile=texlive.conf
 
-        # Put a symbolic link of the TeX Live executables in `ibdir'. The
-        # main problem is that the year and build system (for example
-        # `x86_64-linux') are also in the directory names, making it hard
-        # to be generic. We are using wildcards here, but only in this
-        # Makefile, not in any other.
-	ln -fs $(idir)/texlive/20*/bin/*/* $(ibdir)/
+        # TeX Live's installation may fail due to any reason. But TeX Live
+        # is optional (only necessary for building the final PDF). So we
+        # don't want the configure script to fail if it can't run.
+	if ./install-tl --profile=texlive.conf; then
 
-        # Clean up and build the final target.
-	cd .. && rm -rf install-tl-* $(tdir)/install-tl-unx.tar.gz
-	echo "TeX Live is ready." > $@
+          # Put a symbolic link of the TeX Live executables in `ibdir'. The
+          # main problem is that the year and build system (for example
+          # `x86_64-linux') are also in the directory names, making it hard
+          # to be generic. We are using wildcards here, but only in this
+          # Makefile, not in any other.
+	  ln -fs $(idir)/texlive/20*/bin/*/* $(ibdir)/
+
+          # Register that the build was successful.
+	  echo "TeX Live is ready." > $@
+	else
+	  echo "NOT!" > $@
+	fi
+
+        # Clean up
+	cd ..
+	rm -rf install-tl-*
 
 
 
@@ -315,12 +339,14 @@ $(ibdir)/texlive-ready-tlmgr: $(tdir)/install-tl-unx.tar.gz \
 # To keep things modular and simple, we'll break up the installation of TeX
 # Live itself (only very basic TeX and LaTeX) and the installation of its
 # necessary packages into two packages.
-$(ibdir)/texlive-ready: reproduce/config/pipeline/dependency-texlive.mk \
-	                $(ibdir)/texlive-ready-tlmgr
+$(ddir)/texlive-versions.tex: reproduce/config/pipeline/dependency-texlive.mk \
+	                      $(ibdir)/texlive-ready-tlmgr
 
         # To work with TeX live installation, we'll need the internet.
-	res=$(cat $(ibdir)/texlive-ready-tlmgr)
-	if [ -f $(ibdir)/texlive-ready-tlmgr ]; then
+	@res=$$(cat $(ibdir)/texlive-ready-tlmgr)
+	if [ x$$res = x"NOT!" ]; then
+	  echo "" > $@
+	else
 
           # The current directory is necessary later.
 	  topdir=$$(pwd)
@@ -342,10 +368,9 @@ $(ibdir)/texlive-ready: reproduce/config/pipeline/dependency-texlive.mk \
 	  ln -fs $(idir)/texlive/20*/bin/*/* $(ibdir)/
 
           # Get all the necessary versions.
-	  tv=$(ddir)/texlive-versions.tex
 	  texlive=$$(pdflatex --version | awk 'NR==1' | sed 's/.*(\(.*\))/\1/' \
 	                      | awk '{print $$NF}');
-	  echo "\newcommand{\\texliveversion}{$$texlive}" > $$tv
+	  echo "\newcommand{\\texliveversion}{$$texlive}" > $@
 
           # LaTeX Package versions.
 	  tlmgr info $(texlive-packages) --only-installed | awk                \
@@ -355,8 +380,5 @@ $(ibdir)/texlive-ready: reproduce/config/pipeline/dependency-texlive.mk \
 	        $$1=="cat-version:" {version=$$NF}                             \
 	        $$1=="cat-date:" {if(version==0) version=$$2;                  \
 	                          printf("\\newcommand{\\tex%sversion}{%s}\n", \
-	                          name, version)}' >> $$tv
-
-          # Write the target if TeX live was actually installed.
-	  echo "TeX Live's packages are also ready." > $@
+	                          name, version)}' >> $@
 	fi
diff --git a/reproduce/src/make/initialize.mk b/reproduce/src/make/initialize.mk
index 9141b30..db27289 100644
--- a/reproduce/src/make/initialize.mk
+++ b/reproduce/src/make/initialize.mk
@@ -254,5 +254,5 @@ $(mtexdir)/initialize.tex: | $(mtexdir)
 	                wcslibversion)
 	$(call lvcheck, zlib.h, $(zlib-version), zlib, zlibversion)
 
-        # TeX versions
+        # TeX package versions
 	cat $(BDIR)/dependencies/texlive-versions.tex >> $@