Hello,
Can you rerun guix build command with -K and check the version of gcc being used in the file "/tmp/guix-build-.../environment-variables"?
Related to gcc, i see:export CPATH="/gnu/store/vz5xa345sgsq1c7gb5biaqb8zmyf7934-glibc-bootstrap-0/include:/gnu/store/fc2nz3zkac3w2ic5cyganj0rjqahjb5z-gcc-bootstrap-0/include" export LIBRARY_PATH="/gnu/store/vz5xa345sgsq1c7gb5biaqb8zmyf7934-glibc-bootstrap-0/lib:/gnu/store/fc2nz3zkac3w2ic5cyganj0rjqahjb5z-gcc-bootstrap-0/lib" export PATH="/gnu/store/p797q2yjk4hdh7sckipm0n04hchxfqfh-make-boot0-4.2.1/bin:/gnu/store/5cszbchxy87hyklzk0xxlg9gmhqbn8vg-diffutils-boot0-3.5/bin:/gnu/store/fc2nz3zkac3w2ic5cyganj0rjqahjb5z-gcc-bootstrap-0/bin:/gnu/store/5nykjy2czdidg86qi0p11achvrvaswip-binutils-bootstrap-0/bin:/gnu/store/2s8j6j6mpinw30b3cnf704nhhy42v7sj-bootstrap-binaries-0/bin"
Attached environment-variables file.
export CPATH="/gnu/store/vz5xa345sgsq1c7gb5biaqb8zmyf7934-glibc-bootstrap-0/include:/gnu/store/fc2nz3zkac3w2ic5cyganj0rjqahjb5z-gcc-bootstrap-0/include" export GUILE_SYSTEM_COMPILED_PATH="/gnu/store/w78bpdd4i488ybjhnifs89p86pprk169-guile-bootstrap-2.0/lib/guile/2.0/ccache" export GUILE_SYSTEM_PATH="/gnu/store/w78bpdd4i488ybjhnifs89p86pprk169-guile-bootstrap-2.0/share/guile/2.0" export HOME="/homeless-shelter" export LD_ORIGIN_PATH="/gnu/store" export LIBRARY_PATH="/gnu/store/vz5xa345sgsq1c7gb5biaqb8zmyf7934-glibc-bootstrap-0/lib:/gnu/store/fc2nz3zkac3w2ic5cyganj0rjqahjb5z-gcc-bootstrap-0/lib" export NIX_BUILD_CORES="0" export NIX_BUILD_TOP="/tmp/guix-build-findutils-boot0-4.6.0.drv-0" export NIX_STORE="/gnu/store" export OLDPWD export PATH="/gnu/store/p797q2yjk4hdh7sckipm0n04hchxfqfh-make-boot0-4.2.1/bin:/gnu/store/5cszbchxy87hyklzk0xxlg9gmhqbn8vg-diffutils-boot0-3.5/bin:/gnu/store/fc2nz3zkac3w2ic5cyganj0rjqahjb5z-gcc-bootstrap-0/bin:/gnu/store/5nykjy2czdidg86qi0p11achvrvaswip-binutils-bootstrap-0/bin:/gnu/store/2s8j6j6mpinw30b3cnf704nhhy42v7sj-bootstrap-binaries-0/bin" export PWD="/tmp/guix-build-findutils-boot0-4.6.0.drv-0/findutils-4.6.0" export SHLVL="1" export SOURCE_DATE_EPOCH="1" export TEMP="/tmp/guix-build-findutils-boot0-4.6.0.drv-0" export TEMPDIR="/tmp/guix-build-findutils-boot0-4.6.0.drv-0" export TMP="/tmp/guix-build-findutils-boot0-4.6.0.drv-0" export TMPDIR="/tmp/guix-build-findutils-boot0-4.6.0.drv-0" export out="/gnu/store/xhmhlgwhyqz74zgcbf4v0qhs6r2jgs1j-findutils-boot0-4.6.0"
