=========== env
=========== set
HOME='/homeless-shelter'
IFS=' 
'
NIX_BUILD_CORES='24'
NIX_BUILD_TOP='/tmp/nix-build-bootstrap-tools.drv-0'
NIX_STORE='/some-dir/nix/store'
PATH='/path-not-set'
PPID='18727'
PS1='$ '
PS2='> '
PS4='+ '
PWD='/tmp/nix-build-bootstrap-tools.drv-0'
TEMP='/tmp/nix-build-bootstrap-tools.drv-0'
TEMPDIR='/tmp/nix-build-bootstrap-tools.drv-0'
TMP='/tmp/nix-build-bootstrap-tools.drv-0'
TMPDIR='/tmp/nix-build-bootstrap-tools.drv-0'
builder='/some-dir/nix/store/bvabzh0vbais1piqbwxj41ipq3qsn90z-busybox'
isGNU='1'
langC='1'
langCC='1'
name='bootstrap-tools'
out='/some-dir/nix/store/ij43xh8b5yhmz5x0wrvl6d7md2lkiv4z-bootstrap-tools'
system='x86_64-linux'
tarball='/some-dir/nix/store/mwjgmhgs98bwzsf60miy83kn3pv4000x-bootstrap-tools.tar.xz'
=========== /bin/ls /some-dir/nix/store/ij43xh8b5yhmz5x0wrvl6d7md2lkiv4z-bootstrap-tools/lib | /bin/grep 'ld-.*so\..'
ld-linux-x86-64.so.2
=========== echo /some-dir/nix/store/ij43xh8b5yhmz5x0wrvl6d7md2lkiv4z-bootstrap-tools/lib/ld-*so.?
/some-dir/nix/store/ij43xh8b5yhmz5x0wrvl6d7md2lkiv4z-bootstrap-tools/lib/ld-*so.?
=========== /usr/bin/pstree -ap 18788
bvabzh0vbais1pi,18788 ash -e /some-dir/nix/store/kjmafkhlbg67z2cgln7q9zs7a1nvmf6b-unpack-bootstrap-tools.sh
  `-pstree,18956 -ap 18788
=========== /usr/bin/pstree -ap 18727
nix-env,18727 -vvv -iA nixpkgs.nix
  |-bvabzh0vbais1pi,18788 ash -e /some-dir/nix/store/kjmafkhlbg67z2cgln7q9zs7a1nvmf6b-unpack-bootstrap-tools.sh
  |   `-pstree,18957 -ap 18727
  `-download-from-b,18732 -w -I/some-dir/nix-boot/lib/perl5/site_perl/5.10.1/x86_64-linux-gnu-thread-multi...