>From today’s Guix, where (default-guile) is 3.0, I can’t build 1.0.0:
--8<---------------cut here---------------start------------->8--- $ guix describe Generacio 142 May 11 2020 00:51:39 (nuna) guix b76b1d3 repository URL: https://git.savannah.gnu.org/git/guix.git branch: master commit: b76b1d3fb65fec98b96a2b4cfa984316dd956a29 $ guix time-machine --commit=6298c3ffd9654d3231a6f25390b056483e8f407c -- describe Updating channel 'guix' from Git repository at 'https://git.savannah.gnu.org/git/guix.git'... ;;; WARNING: loading compiled file /gnu/store/g29fabc57fkzimrf6gsb72fr7fq069yf-module-import-compiled/guix/store.go failed: ;;; In procedure load-thunk-from-memory: incompatible bytecode kind ;;; WARNING: loading compiled file /gnu/store/g29fabc57fkzimrf6gsb72fr7fq069yf-module-import-compiled/guix/store.go failed: ;;; In procedure load-thunk-from-memory: incompatible bytecode kind ;;; WARNING: loading compiled file /gnu/store/g29fabc57fkzimrf6gsb72fr7fq069yf-module-import-compiled/guix/utils.go failed: ;;; In procedure load-thunk-from-memory: incompatible bytecode kind ;;; WARNING: loading compiled file /gnu/store/g29fabc57fkzimrf6gsb72fr7fq069yf-module-import-compiled/guix/utils.go failed: ;;; In procedure load-thunk-from-memory: incompatible bytecode kind ;;; WARNING: loading compiled file /gnu/store/g29fabc57fkzimrf6gsb72fr7fq069yf-module-import-compiled/guix/config.go failed: ;;; In procedure load-thunk-from-memory: incompatible bytecode kind ;;; WARNING: loading compiled file /gnu/store/g29fabc57fkzimrf6gsb72fr7fq069yf-module-import-compiled/guix/config.go failed: ;;; In procedure load-thunk-from-memory: incompatible bytecode kind […] In unknown file: 5 (primitive-load-path "guix/build/compile" #<procedure 7?>) In ice-9/eval.scm: 626:19 4 (_ #<directory (guix build compile) 7f5d72139280>) 159:9 3 (_ #<directory (guix build compile) 7f5d72139280>) 182:19 2 (proc #<directory (guix build compile) 7f5d72139280>) 142:16 1 (compile-top-call #<directory (guix build compile) 7f5?> ?) In unknown file: 0 (%resolve-variable (7 . #) #<directory (guix build comp?>) ERROR: In procedure %resolve-variable: Unbound variable: tree-il-default-optimization-options guix time-machine: error: You found a bug: the program '/gnu/store/9c0s7llsc1sqw6hkz99vhyr8wmipc1zl-compute-guix-derivation' failed to compute the derivation for Guix (version: "6298c3ffd9654d3231a6f25390b056483e8f407c"; system: "x86_64-linux"; host version: "b76b1d3fb65fec98b96a2b4cfa984316dd956a29"; pull-version: 1). Please report it by email to <bug-guix@gnu.org>. --8<---------------cut here---------------end--------------->8--- The module in /gnu/store/g29fabc57fkzimrf6gsb72fr7fq069yf-module-import-compiled were built with 2.2.4, which is fine, but ‘compute-guix-derivation’ itself runs on 3.0. Probably ‘%quirks’ should also change (default-guile). Ludo’.