Jesse, I expect your issue is you have an extra gexp in build-system/crosstool-ng.scm, line 71. I determined this by:
1. Examining the derivation Guix is trying to build 2. Examining the -builder file mentioned in the derivation 3. Observe that ct-ng-riscv64-unknown-elf-1.26.0-builder wraps (crosstool-ng-build ...) in (gexp). The package still did not build locally on my machine after removing it, but it seems to have progressed to a further stage. -- Take it easy, Richard Sent Making my computer weirder one commit at a time.