blahtexml: init at 0.9+unstable=20200516

[xworld21]

Motivation for this change

Add package blahtexml.

Not sure if it works on ARM64, though.

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 21.11 Release Notes (or backporting 21.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.

[nixos-discourse]

This pull request has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/prs-ready-for-review/3032/645

[Mindavi]

Result of nixpkgs-review pr 147594 run on x86_64-linux 1

1 package failed to build:

• blahtexml

blahtexml> Output written on manual.pdf (39 pages, 406493 bytes).
blahtexml> Transcript written on manual.log.
blahtexml> g++ -I. -ISource -ISource/BlahtexCore -ISource/BlahtexXMLin -O2 -c Source/UnicodeConverter.cpp -o bin-blahtex/UnicodeConverter.o
blahtexml> Assembler messages:
blahtexml> Fatal error: can't create bin-blahtex/UnicodeConverter.o: No such file or directory
blahtexml> make: *** [makefile:105: bin-blahtex/UnicodeConverter.o] Error 1

[xworld21]

blahtexml> g++ -I. -ISource -ISource/BlahtexCore -ISource/BlahtexXMLin -O2 -c Source/UnicodeConverter.cpp -o bin-blahtex/UnicodeConverter.o
blahtexml> Assembler messages:
blahtexml> Fatal error: can't create bin-blahtex/UnicodeConverter.o: No such file or directory

Lesson: do not enabling parallel building unless absolutely sure. Reverted to default. It should work now.

[Mindavi]

It builds fine now for me. It also runs and shows help output (didn't test anything other than that).

[xworld21]

I believe it's good now, many thanks for reviewing!