--- I had a quick look into fixing this myself, and made a little bit of progress. Not being that familiar with how things work yet, I'm going on what I can guess by looking at gnu/packages/tex.scm, guix/build-system/texlive.scm and guix/build/texlive-build-system.scm so I may well be misinterpreting some things.
The source for polyglossia comes in a single file, polyglossia.dtx. The README embedded within it says to extract the files by running xetex or luatex on it. I tried to convince the build system to do this by this patch, which may or may not have been the right approach. It does at least get a new error: Generating file(s) ../README ! I can't write on file `../README.tex'. It appears to be trying to write its README file to the directory above the build directory, which is failing. Is there a way to make this directory writeable, or to stop the build system from trying to generate the README there? gnu/packages/tex.scm | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/gnu/packages/tex.scm b/gnu/packages/tex.scm index c3ce80c8f5..0894148501 100644 --- a/gnu/packages/tex.scm +++ b/gnu/packages/tex.scm @@ -3249,7 +3249,8 @@ array environments; verbatim handling; and syntax diagrams.") (base32 "03ma58z3ypsbp7zgkzb1ylpn2ygr27cxzkf042ns0rif4g8s491f")))) (build-system texlive-build-system) - (arguments '(#:tex-directory "latex/polyglossia")) + (arguments '(#:tex-directory "latex/polyglossia" + #:build-targets '("polyglossia.dtx"))) (home-page "https://www.ctan.org/pkg/polyglossia") (synopsis "Alternative to babel for XeLaTeX and LuaLaTeX") (description -- 2.21.0