Okay, I dug deeper yesterday and have made some more progress on this issue.
I downloaded the tarball specified in the iproute2 package, unpacked it, and
reviewed its build scripts. From what I can tell, there is an error in the
#:make-flags argument in the current Guix iproute2 package. Specifically, the
HDRDIR and CONFDIR flags are incorrectly set currently. According the Makefile
in that package, HDRDIR should be #$output/include/iproute2 and CONFDIR should
be #$output/etc/iproute2. The Guix package has HDRDIR set to #$output/include
and CONFDIR set to #$output/etc.
This is the reason that /etc in the Guix shell container is polluted with the
iproute2 package's config files. The error that I originally reported is
happening because /etc/iproute2/group is being placed in /etc/group, thus
conflicting with the real /etc/group file that is placed there by `guix shell
--container` and `guix shell --container --emulate-fhs`. Note that
/etc/iproute2/group is NOT a valid substitute for /etc/group. It lists
configured network devices, not Unix user groups.
So...we need a patch for the iproute2 package to fix these #:make-flags. Here
is my currently working package with those flags corrected for reference.
;;=====================================================================================================
(define-module (lambdatronic iproute)
#:use-module ((gnu packages linux) #:select (iproute))
#:use-module ((guix gexp) #:select (gexp))
#:use-module ((guix packages) #:select (package package-arguments))
#:use-module ((guix utils) #:select (cc-for-target))
#:use-module ((srfi srfi-1) #:select (take-while drop-while)))
(define-public iproute-patched
(package
(inherit iproute)
(name "iproute2-patched")
(arguments (let* ((old-args (package-arguments iproute))
(head (take-while (lambda (arg) (not (eq? arg
#:make-flags))) old-args))
(tail (drop-while (lambda (arg) (not (eq? arg
#:make-flags))) old-args))
(new-make-flags (list #:make-flags
#~(let ((out #$output))
(list (string-append "CC="
#$(cc-for-target))
"HOSTCC=gcc"
(string-append
"BASH_COMPDIR=" out
"/etc/bash_completion.d")
(string-append "LIBDIR="
out "/lib")
(string-append "HDRDIR="
out "/include/iproute2")
(string-append "SBINDIR="
out "/sbin")
(string-append "CONFDIR="
out "/etc/iproute2")
(string-append "MANDIR="
out "/share/man"))))))
(append head
new-make-flags
(cddr tail))))))
;;=====================================================================================================
As you can see, this package can be included in an --emulate-fhs container:
;;=====================================================================================================
$ guix shell -CFN coreutils iproute2-patched -- cat /etc/group
users:x:998:
overflow:x:65534:
;;=====================================================================================================
Thanks, Guix!
Gary
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