Hello,

In the pursuit of causes for problems as yet not clear enough to
post as bugs, I am looking for ambivalences in name searches
in /gnu/... and /(the-rest).

The first is immediately bash:
To duplicate, log into a fresh console and look at what's running
and invoked. I did an Alt-F4 and logged in fresh, and captured the
terminal screen seen in the following:

---------8<---------

[ ... snip some output from .bash_profile ... ]

[13:33 ~/bs]$ ps -o pid,tty,args
  PID TT       COMMAND
25500 tty4     -bash
25966 tty4     ps -o pid,tty,args
[13:35 ~/bs]$ which -a ps
/usr/bin/ps
[13:35 ~/bs]$ file /proc/25500/exe
/proc/25500/exe: symbolic link to /usr/bin/bash

So, the shell I am talking to right after login is /usr/bin/bash,
but if I type bash, the guix version will be found first:

[13:36 ~/bs]$ which -a bash
/home/bokr/.guix-profile/bin/bash
/usr/bin/bash
[13:38 ~/bs]$ which -a bash|xargs readlink -f
/gnu/store/qn1ax1fkj16x280m1rv7mcimfmn9l2pf-bash-4.4.23/bin/bash
/usr/bin/bash

So, nesting into the guix one,

[13:39 ~/bs]$ bash
[13:39 ~/bs]$ ps -o pid,tty,args
  PID TT       COMMAND
25500 tty4     -bash
26226 tty4     bash
26253 tty4     ps -o pid,tty,args
[13:40 ~/bs]$ file /proc/26226/exe
/proc/26226/exe: symbolic link to 
/gnu/store/qn1ax1fkj16x280m1rv7mcimfmn9l2pf-bash-4.4.23/bin/bash

Indeed our current pid belongs to guix bash.
What is the difference? They were built differently...

[13:41 ~/bs]$
[13:42 ~/bs]$ which -a bash
/home/bokr/.guix-profile/bin/bash
/usr/bin/bash
[13:43 ~/bs]$ which -a bash|xargs readlink -f|while read line;do echo -ne 
"$line:\n    "; file "$line";done
/gnu/store/qn1ax1fkj16x280m1rv7mcimfmn9l2pf-bash-4.4.23/bin/bash:
    /gnu/store/qn1ax1fkj16x280m1rv7mcimfmn9l2pf-bash-4.4.23/bin/bash:
    ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, 
interpreter
    
/gnu/store/h90vnqw0nwd0hhm1l5dgxsdrigddfmq4-glibc-2.28/lib/ld-linux-x86-64.so.2,
    for GNU/Linux 2.6.32, not stripped
/usr/bin/bash:
    /usr/bin/bash: ELF 64-bit LSB pie executable, x86-64, version 1 (SYSV), 
dynamically linked,
    interpreter /lib64/ld-linux-x86-64.so.2, 
BuildID[sha1]=21a51cb5f7d727370e4d8099d283d7cd20222571,
    for GNU/Linux 3.2.0, stripped

Are the differences possibly dangerous?

The way I got the above, and this tail part itself:
[13:45 ~/bs]$ tty
/dev/tty4
[13:47 ~/bs]$ su -c 'setterm -file login-bashes.txt -dump 4'
------------------------------------

Looking for dependencies outside of /gnu from within /gnu, I grepped the whole
as you see below. I am sure most of this is fine and coming out of documentation
and stuff meant for other than normally booted runtime. But does it all look ok?

Or is my foreign-host twilight-zone shared ArchLinux/guix namespace really not
meant to be. I.e., is guix really defined to use /usr/ as a trusted base 
namespace
when it is defined by e.g. linux-libre in GuixSD ?

Where would be the best docs to read about the guix name and environment 
rationales?

Ok, here is the grep:
(most of the bashes are in the store, as seen at the bottom, but many not)
-------------------------------
This was generated by:
    grep -Ihr '^ *#!' /gnu|sort|uniq -c|sort -h > gnu-bin-hash-bangs.txt

      2       #!/bin/csh
      2 #!/bin/tcsh
      2 #!@GAWK@ -f
      2 #!/gnu/store/03n7p9g78ixkrmra674pkx2c9cx8fwmz-guile-1.8.8/bin/guile \
      2 
#!/gnu/store/0xfmkqpi7xk3ixhrqvjijk4ibsglif62-python-3.7.0/bin/python3.7m
      2 #!/gnu/store/57daq0hkwvmwx4asiy669cmln868brfm-python2-2.7.15/bin/python2
      2 #!/gnu/store/9alic3caqhay3h8mx4iihpmyj6ymqpcx-guile-2.2.4/bin/guile
      2 
#!/gnu/store/b7fqhszxl02g6pfm3vw6b3cjz472qrly-python-3.7.0/bin/python3.7m
      2 
#!/gnu/store/cl42c73h609bp2gy92qkh8q56spnnl2n-python-3.7.0/bin/python3.7m
      2 #! /gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl
      2 
#!/gnu/store/h8l1pby3cm6b4fxsfwwr65b4d1hyh6cs-python-3.7.0/bin/python3.7m
      2 #!/gnu/store/l67sib1ld0fgyf0f4vrzyxnmn4yvimvb-gawk-4.2.1/bin/gawk -f
      2 #!/gnu/store/qn1ax1fkj16x280m1rv7mcimfmn9l2pf-bash-4.4.23/bin/sh -
      2 
#!/gnu/store/ybglr7nfs8v9kpnm8vf4drg3gafnvd15-guile-static-stripped-2.2.4/bin/guile
 --no-auto-compile
      2 #!/gnu/store/zm3188ipzi262s0m8bxm24br77yh9pd8-python-3.7.0/bin/python3
      2 
#!/gnu/store/zm3188ipzi262s0m8bxm24br77yh9pd8-python-3.7.0/bin/python3.7m
      2 #!@GUILE@ -s
      2 #!@PHP@ -q
      2 #!@TCLSH@
      2 #! /usr/bin/perl
      2 #!/usr/bin/perl -- # -*- Perl -*-
      2  #! /usr/bin/perl -w
      2 #! /usr/bin/python
      2 #!/usr/bin/python -u
      2 #!@WISH@
      3 #!#{Gem.ruby}
      3 
#!/gnu/store/81y6l9ggc5q6z44hp90ll4dv5jl582mq-texlive-bin-20180414/bin/texlua 
      3 
#!/gnu/store/hw0cz0mis43z19i76pl6ijx5risx4lf0-texlive-bin-20180414/bin/texlua 
      3 #!/gnu/store/lgbiv7q1b6m141nrkjm92qkl9ih5gamw-python2-2.7.15/bin/python 
-O
      3 
#!/gnu/store/pyrlmxqx3g1mhzpnfpw4w94rj08wxfhj-texlive-bin-20180414/bin/texlua 
      3 
#!/gnu/store/x9c77i6r5fmarslij6ng81awgrxblplm-texlive-bin-20180414/bin/texlua 
      3 
#!/gnu/store/xwzyy0q261brxmafkvinrrvkq4rgwiq6-texlive-bin-20180414/bin/texlua 
      3                    #!if(WithStride,".stride","")
      3                 #!if(WithStride,".stride","")
      3 #! libapr-1.so
      3  #!/usr/bin/env ruby
      4                 #! $key eq '-range'    and  $key .= 's';
      4             #! $pod_parser->select(@{ $opts{'-ranges'} })
      4 #!$^X -w
      4 #! at all.)
      4 
#!/gnu/store/9jjnk994sg3kynx7w2p873x60yr27q1p-pulseaudio-12.2/bin/pulseaudio -nF
      4 
#!/gnu/store/cwla78yg7vnngk51jp81j4phy2fpgbhm-pulseaudio-12.2/bin/pulseaudio -nF
      4 
#!/gnu/store/glvv9jyp28f8454laig76agc3jig4f4z-pulseaudio-12.2/bin/pulseaudio -nF
      4 #!/gnu/store/gvwf71vddp8c1d7ydqg02p43mgdjrx6s-bash
      4 
#!/gnu/store/qqfrzd5jrpq7i1gn9spv7hzpj4kllvj0-pulseaudio-12.2/bin/pulseaudio -nF
      4 
#!/gnu/store/qsvja1gy86vrdkcqygkamg5j0sfq6ry4-pulseaudio-12.2/bin/pulseaudio -nF
      4 
#!/gnu/store/s795jav4270x940spl48a885nhw4axnx-pulseaudio-12.2/bin/pulseaudio -nF
      4 
#!/gnu/store/wsd8i4dy3vvkpfjlg5m1q5cy0b2ld95q-pulseaudio-12.2/bin/pulseaudio -nF
      4 
#!/gnu/store/yw409j5hzvhgj54p2xxaqbh3bz9zfhpg-pulseaudio-12.2/bin/pulseaudio -nF
      4 
#!/gnu/store/zvhp49cvslhjdv7n19nssv2kr2jqa87h-pulseaudio-12.2/bin/pulseaudio -nF
      4             #!     if ( (defined $opts{'-ranges'})
      4 #!include_default, #!include /Path/to/another/manifest.skip
      4 #! libaprutil-1.so
      4     #! /opt/perl5/bin/perl
      4   #!/path/to/a/custom_perl --some --args
      4    #!/path/to/jperl
      4    #!/path/to/perl -Mencoding=euc-jp
      4 #!/path/to/perl script invocation.  There is a PTF available from
      4     #! -*-perl-*-
      4   #!perl
      4 #! perl
      4 #!@PERL@
      4    #!perl -l
      4     #!perl -T
      4 #!./perl -w
      4 #!/pro/bin/perl
      4 #!/QOpenSys/perl/bin/perl should always work.
      4             #!          && ((ref $opts{'-ranges'}) eq 'ARRAY') );
      4             #! ## Select the desired paragraph ranges
      4   #!/usr/bin/env perl use lib qw( lib );      # Add ./lib to @INC
      4 #!/usr/bin/perl MakeMaker will change this to the path of the perl
      4     #!/usr/bin/perl -n
      4     #!/usr/bin/perl -pi.orig
      4     #!/usr/bin/perl -s
      4     #!/usr/bin/perl -spi.orig   # same as -s -p -i.orig
      4     #!/usr/bin/perl -T -w
      4     #!/usr/bin/perl  -w
      4   #!/usr/bin/perl -wl
      4     #!/usr/bin/perl -w -T
      4   #!/usr/bin/php 
      4 #! /usr/bin/sh
      4     #!/usr/local/bin/perl5.14
      4     #!/usr/local/bin/perl     # just a comment really
      4   #!/usr/local/perl-5.6/bin/perl -w
      4     #!/usr/locl/bin/perl
      5 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl -W
      5 #!/gnu/store/g87hamjyipk1j6dfq5pjfzfnfb64spbv-python2-2.7.15/bin/python 
-O
      5 #!/gnu/store/iqx98v4rnw26n4qn555l4pbj96navxiv-python2-2.7.15/bin/python 
-O
      5 #!/usr/bin/env python2
      6 
#!2_]r;QWmr;HTnrVZTls&f@&'E.jlrVud)rr5ao!5AL4r;?NmrVlcos83-$s!e*NeGfI2rVud!
      6     #![allow(dead_code, unused_imports)]
      6 #! /bin/bash
      6   #!/bin/bash^^J%
      6         #!/bin/sh
      6 #!bQ7"8Gg6b3eoe>$R71>:0O.S=?1;7XQV?G"!XuWkieE.A([)Gb:<g^IbF&+pDD
      6 #!cslatex
      6 #! <fmtname> <enginename> <hyphen> <args>
      6 
#!GaH0,lQdqUHRI!sXe9eQO3Ee^,L\eVF^Wbnu,aSH[**!_"<Pp=0tM"j#6E8hJM_"j#6E?QmeH
      6 #!/gnu/store/2k67pvrdq9hygg2ysgflk94jhbnc9s9g-tcsh-6.20.00/bin/csh
      6 #!/gnu/store/2k67pvrdq9hygg2ysgflk94jhbnc9s9g-tcsh-6.20.00/bin/csh -xv
      6 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl -n
      6 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl -p -i
      6 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl -p 
-i.bak
      6 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl -T
      6 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl -T -w
      6 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl -w
      6 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl -w 
      6 #!H!IX"''9Wa>D7VYA@E`L5suKOJFl<>^ul(bEXhP*HM"9Cbeu,BGMsN,"AdAt[@0
      6 
#!*k<&fW2FrVus62#[IT!r2g.8PT6c"onDor;HKjrVQBcqo8O6&-;h3!XT9::G`Fa"TSNE1E60,
      6 #!Kmci!<<*"Z2t"+!g3]e!<<*"\cMj3"Hj)l!<<*"_?'];"d0#h!<<*"aoVPC#Ef
      6 
#!kTb'N:-k+U6(!m^1q$6QNUqf%C$^9!K[Ab31,32$=gB!5?i/?h?%VXZd%RmtRZfZE*me2U0QZ'3/
      6 #!latex
      6 #! Map belleek.map
      6 #! Map mapname.map
      6 #! MixedMap mapname.map
      6 #!/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-glibc-2.18/bin/sh
      6 #!P5"q7-/;:!\TuP1=X[Q1lGL6k.rYpP!p4b6-X*ZAl;G!b8,cGrd14Q5D0jpXMON
      6 #!pdfcslatex
      6 #!pdflatex
      6 #! @PERL@ -w
      6 #!rF>2s`M\gb\?pQ[)lRMVXD7X%;@d6\M.@oPbQ)'8mjcqSsDGM79n2$XtTN<DZbi
      6 #!topic/comp.text.tex/o14P2e83o4A}{comp.text.tex} for a macro that will 
define commands and also save the commands being defined in a file or a 
container macro, \eg, for spelling exceptions on editors that don't support 
\tex syntax.
      6 #!UGlO1/(4)%t4-m<.kt,%uoHGtV4M7IFIlnDr.!2?[>P^t.[[P$W\[/V0J8eAS<P
      6 #! /usr/bin/env perl
      6 #!/usr/bin/env pfaedit
      6 #!/usr/bin/fontforge -lang=ff
      6 #!/usr/bin/fontforge -script
      6 #!/usr/bin/fontforge -script 
      6 #!/usr/local/bin/perl
      7 #!/gnu/store/lgbiv7q1b6m141nrkjm92qkl9ih5gamw-python2-2.7.15/bin/python2
      8 
#!/gnu/store/81y6l9ggc5q6z44hp90ll4dv5jl582mq-texlive-bin-20180414/bin/texlua  
      8 
#!/gnu/store/8z9avbgm73nzrbkhscps68gcpfipgllc-bootstrap-binaries-0/bin/bash
      8 
#!/gnu/store/hw0cz0mis43z19i76pl6ijx5risx4lf0-texlive-bin-20180414/bin/texlua  
      8 
#!/gnu/store/pyrlmxqx3g1mhzpnfpw4w94rj08wxfhj-texlive-bin-20180414/bin/texlua  
      8 #!/gnu/store/qn1ax1fkj16x280m1rv7mcimfmn9l2pf-bash-4.4.23/bin/sh
      8 
#!/gnu/store/x9c77i6r5fmarslij6ng81awgrxblplm-texlive-bin-20180414/bin/texlua  
      8 
#!/gnu/store/xwzyy0q261brxmafkvinrrvkq4rgwiq6-texlive-bin-20180414/bin/texlua  
      8 
#!/gnu/store/zzakf905mzla4csi1dn9qpcwmgbxj29b-bash-static-4.4.23/bin/bash
      8 #!/gnu/store/zzakf905mzla4csi1dn9qpcwmgbxj29b-bash-static-4.4.23/bin/sh
      8  #!/usr/bin/perl -n
      8  #!/usr/bin/perl -Tw
      8     #!/usr/local/bin/perl
      8     #!/usr/local/bin/perl5.10.0
      8     #!/your/path/to/perl
     10 #!/gnu/store/0xfmkqpi7xk3ixhrqvjijk4ibsglif62-python-3.7.0/bin/python3
     10 #!/gnu/store/cl42c73h609bp2gy92qkh8q56spnnl2n-python-3.7.0/bin/python3
     10    #!/usr/bin/emacs --script
     11 #!/bin/sh -x
     11 #!!!!!!!!???  Check @pwd_log
     11 
#!/gnu/store/g30znz9vwkvi23k41dgallfg85sj65hp-python-wrapper-3.7.0/bin/python
     11 #!/gnu/store/iqx98v4rnw26n4qn555l4pbj96navxiv-python2-2.7.15/bin/python2
     11 #!/usr/bin/emacs -script
     11 #! /usr/local/bin/python
     12        #!/bin/sh
     12   #! /bin/sh
     12 #! cont-fr pdftex cont-usr.tex -8bit *cont-fr.mkii
     12 #! cont-it pdftex cont-usr.tex -8bit *cont-it.mkii
     12 #! cont-nl pdftex cont-usr.tex -8bit *cont-nl.mkii
     12 #! cont-ro pdftex cont-usr.tex -8bit *cont-ro.mkii
     12 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl -n -s
     12 #!/gnu/store/l67sib1ld0fgyf0f4vrzyxnmn4yvimvb-gawk-4.2.1/bin/awk -f
     12 
#!/gnu/store/q19l04vd2za80mk1845pz7r8cz29qk43-bash-minimal-4.4.23/bin/sh -vx
     12     #! Map belleek.map
     12 #! mflua mflua-nowin - mf.ini
     12  #!/usr/bin/env perl
     12 #!/usr/bin/fontforge
     12     #!/usr/bin/perl -Tw
     12 #!/usr/bin/python
     12 #!/usr/local/bin/fontforge
     12 #! /usr/local/bin/perl
     12     #!/usr/local/bin/perl -w
     13 #!/gnu/store/0xfmkqpi7xk3ixhrqvjijk4ibsglif62-python-3.7.0/bin/python3.7
     13 #!/gnu/store/b7fqhszxl02g6pfm3vw6b3cjz472qrly-python-3.7.0/bin/python3.7
     13 #!/gnu/store/cl42c73h609bp2gy92qkh8q56spnnl2n-python-3.7.0/bin/python3.7
     13 #!/gnu/store/g87hamjyipk1j6dfq5pjfzfnfb64spbv-python2-2.7.15/bin/python2
     13 #!/gnu/store/h8l1pby3cm6b4fxsfwwr65b4d1hyh6cs-python-3.7.0/bin/python3.7
     13 #!/gnu/store/zm3188ipzi262s0m8bxm24br77yh9pd8-python-3.7.0/bin/python3.7
     14 #!@EMACS@ --script
     14 #!/gnu/store/9alic3caqhay3h8mx4iihpmyj6ymqpcx-guile-2.2.4/bin/guile -ds
     14 
#!/gnu/store/q19l04vd2za80mk1845pz7r8cz29qk43-bash-minimal-4.4.23/bin/sh -
     14 
#!/gnu/store/q19l04vd2za80mk1845pz7r8cz29qk43-bash-minimal-4.4.23/bin/sh -x
     14 #!@GUILE@ \
     14 #!@GUILE@ -ds
     14     #! luajitlatex luajittex language.dat,language.dat.lua lualatex.ini
     16 #!$PERL
     16 #!/usr/local/bin/perl -w
     17 
#!/gnu/store/3w3nz0h93h7jif9d9c3hdfyimgkpx1a4-python-wrapper-3.7.0/bin/python
     18 #!
     18 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl -s
     18 #! luajitlatex luajittex language.dat,language.dat.lua lualatex.ini
     18 #!./perl
     18           #!perl.exe (versions below 4)
     18 #!/usr/bin/env perl
     20 #! 
/gnu/store/q19l04vd2za80mk1845pz7r8cz29qk43-bash-minimal-4.4.23/bin/bash
     20  #!/usr/bin/perl -w
     21 #!/gnu/store/b7fqhszxl02g6pfm3vw6b3cjz472qrly-python-3.7.0/bin/python3
     22 
#!/gnu/store/iqx98v4rnw26n4qn555l4pbj96navxiv-python2-2.7.15/bin/python2.7
     22 #!/usr/bin/env wish
     23 
#!/gnu/store/r68bi4640vm0s7zsgyk7shsag8ibl3nc-python-wrapper-3.7.0/bin/python
     24 #!/bin/lua
     24 #!/usr/bin/lua
     24  #!/usr/bin/perl
     25 
#!/gnu/store/57daq0hkwvmwx4asiy669cmln868brfm-python2-2.7.15/bin/python2.7
     25 #!perl -w
     28 
#!/gnu/store/lgbiv7q1b6m141nrkjm92qkl9ih5gamw-python2-2.7.15/bin/python2.7
     28 #!perl
     29 #!/gnu/store/bs6bwq60sh3zamgiqmkyryf1lxbfjkgd-lua-5.3.5/bin/lua
     30  #![allow(dead_code, unused_variables)]
     30 #!/usr/bin/env python
     32     #!/usr/bin/env perl
     33 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl 
     35  #![allow(unused_variables)]
     35  #! /bin/sh -e
     35  #![feature(omit_gdb_pretty_printer_section)]
     36 #! $SHELL
     38 #!/gnu/store/@dots{}-guile-2.0.11/bin/guile -ds
     38 
#!/gnu/store/g87hamjyipk1j6dfq5pjfzfnfb64spbv-python2-2.7.15/bin/python2.7
     40     #!/bin/sh
     40 #!/gnu/store/9alic3caqhay3h8mx4iihpmyj6ymqpcx-guile-2.2.4/bin/guile 
--no-auto-compile
     42 #!/gnu/store/r658y3cgpnf99nxjxqgjiaizx20ac4k0-guile-2.2.4/bin/guile 
--no-auto-compile
     42 #!/usr/bin/env ../utility/fontforge-interp.sh
     44   #!/usr/bin/perl
     45 #!/usr/bin/env ruby
     46   #!location/of/bin/ruby
     47 #!@BASH@
     48 #!/usr/bin/env texlua
     50 #!/gnu/store/9alic3caqhay3h8mx4iihpmyj6ymqpcx-guile-2.2.4/bin/guile \
     51 #!/usr/bin/perl -w
     53 #!/usr/bin/env fontforge
     56 #!@SHELL@
     56     #!/usr/bin/perl
     57 #!/gnu/store/5wp8mhmlq2xbd6kg0dq7armjgva7j7cs-perl-5.28.0/bin/perl
     60 #!/gnu/store/2k67pvrdq9hygg2ysgflk94jhbnc9s9g-tcsh-6.20.00/bin/csh -f
     61 #!/gnu/store/zvm2hcnbcv9mygzwpbrb6pvj1nc9wbfv-perl-boot0-5.28.0/bin/perl
     63   #!location/of/bin/bash
     64 #! /bin/sh
     66     #!/usr/bin/perl -w
     80 #! /usr/bin/env python
     90 #! /usr/bin/env python3
    108 #!/gnu/store/fndcvkn64ycw720d3ikjvmyvhsqk2v4n-ruby-2.5.3/bin/ruby
    110 #!~a
    116 #!/usr/bin/perl
    137  #!/bin/sh
    140 #!/gnu/store/61sixy2zjzlrpqwxphzf7v6h0yaysx1s-ruby-2.5.3/bin/ruby
    140 #!/gnu/store/lgbiv7q1b6m141nrkjm92qkl9ih5gamw-python2-2.7.15/bin/python
    145 
#!/gnu/store/8z9avbgm73nzrbkhscps68gcpfipgllc-bootstrap-binaries-0/bin/sh
    146 
#!/gnu/store/hw0cz0mis43z19i76pl6ijx5risx4lf0-texlive-bin-20180414/bin/texlua
    146 
#!/gnu/store/xwzyy0q261brxmafkvinrrvkq4rgwiq6-texlive-bin-20180414/bin/texlua
    150 
#!/gnu/store/81y6l9ggc5q6z44hp90ll4dv5jl582mq-texlive-bin-20180414/bin/texlua
    150 
#!/gnu/store/pyrlmxqx3g1mhzpnfpw4w94rj08wxfhj-texlive-bin-20180414/bin/texlua
    150 
#!/gnu/store/x9c77i6r5fmarslij6ng81awgrxblplm-texlive-bin-20180414/bin/texlua
    162 #!/usr/bin/env python3
    167 #!/bin/bash
    169 #!/usr/bin/env python
    207 #!/gnu/store/iqx98v4rnw26n4qn555l4pbj96navxiv-python2-2.7.15/bin/python
    209 #!/gnu/store/g87hamjyipk1j6dfq5pjfzfnfb64spbv-python2-2.7.15/bin/python
    228 #!/bin/sh
    292 #!/gnu/store/5s2nib1lrd2101bbrivcl17kjx1mspw6-coreutils-8.30/bin/false
    292 
#!/gnu/store/8z9avbgm73nzrbkhscps68gcpfipgllc-bootstrap-binaries-0/bin/false
    319 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl -w
    362  #!/bin/bash
   1589 #!/gnu/store/dna8kpb00kq176rz8x69yy4j33my2q55-perl-5.28.0/bin/perl
   2706 
#!/gnu/store/q19l04vd2za80mk1845pz7r8cz29qk43-bash-minimal-4.4.23/bin/bash
   3294 #!/gnu/store/q19l04vd2za80mk1845pz7r8cz29qk43-bash-minimal-4.4.23/bin/sh
   3871 #!/gnu/store/qn1ax1fkj16x280m1rv7mcimfmn9l2pf-bash-4.4.23/bin/bash
-----------------------------------------------------

Some look a bit weird, like
      6 #!/nix/store/eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee-glibc-2.18/bin/sh
but I guess it could be a template for some remote context. Idk.
There is no /nix directory on my disk anyway. Maybe inside a ramdisk image?

(There were lots of matches in what appears binary to grep, but they were
all to inside /gnu/store, so I  eliminated them for here, with -I)

BTW, I haven't yet started shepherd automatically, and it isn't running in the 
above.
Just guix-daemon:
from emacs I'm in now: Esc-1 Esc-! ps -e f |grep -i guix
  530 ?        Ss     0:00 
/var/guix/profiles/per-user/root/current-guix/bin/guix-daemon 
--build-users-group=guixbuild
31185 ?        Ss     0:00              \_ /home/bokr/.guix-profile/bin/bash -c 
ps -e f |grep -i guix
31187 ?        S      0:00                  \_ grep -i guix

I have set SHELL=/home/bokr/.guix-profile/bin/bash in ~/.bash_profile,
but as seen, that doesn't take effect for the immediate login shell.

I wonder if I could exec it at the end of ~/.bash_profile -- or even as the 
first and only thing, hm...

Hope someone can point to to enlightening reading re names in guix and its 
environments. TIA ;-)

Regards,
Bengt Richter



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