I can reproduce the issue Tomáš Čech (Sleep_Walker) reported at IRC, but only when reconfigure under 'pre-inst-env' and without 'gnu/system/linux.go':
$ cd guix; make clean-go # .../guix/pre-inst-env guix system reconfigure config.scm ;;; Failed to autoload make-session in (gnutls): ;;; ERROR: missing interface for module (gnutls) ;;; Failed to autoload connection-end/client in (gnutls): ;;; ERROR: missing interface for module (gnutls) ;;; Failed to autoload make-session in (gnutls): ;;; ERROR: missing interface for module (gnutls) The following derivations will be built: /gnu/store/8576w1km2a8ij7k66k6n37gyhxzpxda4-system.drv /gnu/store/8jg5iqrd04hj1k8nx6fzcm9lz16nmk4r-grub.cfg.drv /gnu/store/d53lbndj9yryrzgb3p4vjlb9gyh1rri0-activate.drv /gnu/store/y3i8spghyv4dg8d8yl78bvkjb3xcbarb-boot.drv /gnu/store/mrlw80nawfbc8mhq3pz6gbxxpgjbabij-pam.d.drv /gnu/store/sf3n6ijagmc64ik7mn96p8c69xk30nmv-etc.drv Backtrace: In ice-9/boot-9.scm: 157: 10 [catch #t #<catch-closure e365c0> ...] In unknown file: ?: 9 [apply-smob/1 #<catch-closure e365c0>] In ice-9/boot-9.scm: 63: 8 [call-with-prompt prompt0 ...] In ice-9/eval.scm: 432: 7 [eval # #] In ice-9/boot-9.scm: 2401: 6 [save-module-excursion #<procedure e53980 at ice-9/boot-9.scm:4045:3 ()>] 4050: 5 [#<procedure e53980 at ice-9/boot-9.scm:4045:3 ()>] 1724: 4 [%start-stack load-stack #<procedure e66ae0 at ice-9/boot-9.scm:4041:10 ()>] 1729: 3 [#<procedure e6af00 ()>] In unknown file: ?: 2 [primitive-load "/gnu/store/dmsgr6bsp9k0x7c2dmcvhqrgrqqal7kb-pam.d-builder"] In ice-9/boot-9.scm: 775: 1 [for-each #<procedure eec7e0 at ice-9/eval.scm:416:20 (a)> (# # # # ...)] In unknown file: ?: 0 [symlink "/gnu/store/pn2wmdczwcknksxhdn4jl6sh49h0vidm-login" ...] ERROR: In procedure symlink: ERROR: In procedure symlink: File exists builder for `/gnu/store/mrlw80nawfbc8mhq3pz6gbxxpgjbabij-pam.d.drv' failed with exit code 1 cannot build derivation `/gnu/store/sf3n6ijagmc64ik7mn96p8c69xk30nmv-etc.drv': 1 dependencies couldn't be built cannot build derivation `/gnu/store/8576w1km2a8ij7k66k6n37gyhxzpxda4-system.drv': 1 dependencies couldn't be built killing process 2317 guix system: error: build failed: build of `/gnu/store/8576w1km2a8ij7k66k6n37gyhxzpxda4-system.drv' failed the pam.d-builder contains duplicates login entries (I have 3 mingetty-service)
dmsgr6bsp9k0x7c2dmcvhqrgrqqal7kb-pam.d-builder
Description: Binary data
After add '(pretty-print services)' to 'pam-services->directory', I get:
x
Description: Binary data
After 'make gnu/system/linux.go', it works with a different pam.d-builder:
1g1ik6jp04x8j204482hkzvfq4dxly0h-pam.d-builder
Description: Binary data