[root@cloud-231 ~]# nix-shell -p  nix-info --run "nix-info -d"
+ DEBUG=1
+ shift
+ true
+ case "${1:-}" in
+ break
++ desc_system
++ nixev '(import <nixpkgs> {}).system'
++ nix-instantiate --eval --strict -E '(import <nixpkgs> {}).system'
+ fact system '"x86_64-linux"'
+ name=system
+ value='"x86_64-linux"'
+ last=1
+ '[' 0 -eq 0 ']'
+ printf '%s: %s' system '"x86_64-linux"'
system: "x86_64-linux"+ '[' 1 -eq 1 ']'
+ printf ', '
, + '[' 1 -eq 0 ']'
+ '[' 0 -eq 1 ']'
++ desc_multi_user
++ nix-build --no-out-link /nix/store/hjbv2s4jcxpvq07lxl4dna860rsdd3qf-multiuser.nix
++ debuglog
++ '[' 1 -eq 1 ']'
++ cat
these derivations will be built:
  /nix/store/iqifiri36wcp2mdr265m3zlv5cs2akp8-diagnostics-multiuser.drv
building '/nix/store/iqifiri36wcp2mdr265m3zlv5cs2akp8-diagnostics-multiuser.drv'...
/nix/store/3rbjgck4hfsrixr3d1h8c6vdl1m7xigz-stdenv-linux/setup: line 777: /run/user/0/nix-build-diagnostics-multiuser.drv-0/env-vars: Permission denied
unpacking sources
/nix/store/3rbjgck4hfsrixr3d1h8c6vdl1m7xigz-stdenv-linux/setup: line 777: /run/user/0/nix-build-diagnostics-multiuser.drv-0/env-vars: Permission denied
variable $src or $srcs should point to the source
builder for '/nix/store/iqifiri36wcp2mdr265m3zlv5cs2akp8-diagnostics-multiuser.drv' failed with exit code 1
error: build of '/nix/store/iqifiri36wcp2mdr265m3zlv5cs2akp8-diagnostics-multiuser.drv' failed
++ printf no
+ fact 'multi-user?' no
+ name='multi-user?'
+ value=no
+ last=1
+ '[' 0 -eq 0 ']'
+ printf '%s: %s' 'multi-user?' no
multi-user?: no+ '[' 1 -eq 1 ']'
+ printf ', '
, + '[' 1 -eq 0 ']'
+ '[' 0 -eq 1 ']'
++ nix-env --version
+ fact version 'nix-env (Nix) 2.0.4'
+ name=version
+ value='nix-env (Nix) 2.0.4'
+ last=1
+ '[' 0 -eq 0 ']'
+ printf '%s: %s' version 'nix-env (Nix) 2.0.4'
version: nix-env (Nix) 2.0.4+ '[' 1 -eq 1 ']'
+ printf ', '
, + '[' 1 -eq 0 ']'
+ channel_facts
+ find /nix/var/nix/profiles/per-user -mindepth 2 -maxdepth 2 -name channels -print0
+ IFS=
+ read -r -d '' userchannelset
+ manifest=/nix/var/nix/profiles/per-user/root/channels/manifest.nix
+ '[' -e /nix/var/nix/profiles/per-user/root/channels/manifest.nix ']'
++ nixev 'builtins.concatStringsSep ", "
                             (map (ch: ch.name)
                               (import "/nix/var/nix/profiles/per-user/root/channels/manifest.nix"))'
++ nix-instantiate --eval --strict -E 'builtins.concatStringsSep ", "
                             (map (ch: ch.name)
                               (import "/nix/var/nix/profiles/per-user/root/channels/manifest.nix"))'
+ userchannels='"nixpkgs-18.09pre144939.14a9ca27e69"'
++ echo /nix/var/nix/profiles/per-user/root/channels/manifest.nix
++ cut -d/ -f7
+ fact 'channels(root)' '"nixpkgs-18.09pre144939.14a9ca27e69"'
+ name='channels(root)'
+ value='"nixpkgs-18.09pre144939.14a9ca27e69"'
+ last=1
+ '[' 0 -eq 0 ']'
+ printf '%s: %s' 'channels(root)' '"nixpkgs-18.09pre144939.14a9ca27e69"'
channels(root): "nixpkgs-18.09pre144939.14a9ca27e69"+ '[' 1 -eq 1 ']'
+ printf ', '
, + '[' 1 -eq 0 ']'
+ IFS=
+ read -r -d '' userchannelset
++ desc_nixpkgs_path
++ nixev '<nixpkgs>'
++ nix-instantiate --eval --strict -E '<nixpkgs>'
+ last_fact nixpkgs /nix/var/nix/profiles/per-user/root/channels/nixpkgs
+ fact nixpkgs /nix/var/nix/profiles/per-user/root/channels/nixpkgs 0
+ name=nixpkgs
+ value=/nix/var/nix/profiles/per-user/root/channels/nixpkgs
+ last=0
+ '[' 0 -eq 0 ']'
+ printf '%s: %s' nixpkgs /nix/var/nix/profiles/per-user/root/channels/nixpkgs
nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixpkgs+ '[' 0 -eq 1 ']'
+ '[' 0 -eq 0 ']'
+ echo ''