Re: Everything segfaults

[Paul van der Walt <paul@denknerd.org>]

Hey Andreas!

Sorry for the delay!  Busy busy.

On 2016-06-09 at 19:28, quoth Andreas Enge:
> the following looks very strange:
>
>> [very strange output]
>
> Your Guix less seems to open libraries from your Arch system, which are
> incompatible. Did you set LD_LIBRARY_PATH?
> Maybe you could try "ldd /home/paul/.guix-profile/bin/less".

If i open a terminal, then

$ echo $LD_LIBRARY_PATH 
/home/paul/GNUstep/Library/Libraries:/usr/lib

Here's some output:

Case A:
$ ldd .guix-profile/bin/less                                                                 
	linux-vdso.so.1 (0x00007ffe775d7000)
	libncursesw.so.6 => /usr/lib/libncursesw.so.6 (0x00007f8401bc3000)
	libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007f84019ad000)
	libc.so.6 => /usr/lib/libc.so.6 (0x00007f840160c000)
	/gnu/store/8m00x5x8ykmar27s9248cmhnkdb2n54a-glibc-2.22/lib/ld-linux-x86-64.so.2 (0x00007f8401e30000)

Case B:
$ LD_LIBRARY_PATH="~/.guix-profile/lib" ldd .guix-profile/bin/less
	linux-vdso.so.1 (0x00007ffe7cedb000)
	libncursesw.so.6 => /gnu/store/xadbq6k36aphlx0haxxzym3xmd5r1rp8-ncurses-6.0/lib/libncursesw.so.6 (0x00007fbc6dbdb000)
	libgcc_s.so.1 => /gnu/store/v39bh3ln3ncnzhyw0kd12d46kww9747v-gcc-4.9.3-lib/lib/libgcc_s.so.1 (0x00007fbc6d9c5000)
	libc.so.6 => /gnu/store/8m00x5x8ykmar27s9248cmhnkdb2n54a-glibc-2.22/lib/libc.so.6 (0x00007fbc6d620000)
	/gnu/store/8m00x5x8ykmar27s9248cmhnkdb2n54a-glibc-2.22/lib/ld-linux-x86-64.so.2 (0x00007fbc6de4b000)

(when i try setting LD_..="~/.guix-profile/lib:$LD_..", that is, i only
prepend the Guix lib path, then i get the same output from ldd as in
case A -- is that what i expect?)

So there's definitely something funny going on with LD_LIBRARY_PATH
indeed.  But here's another stupid question: surely if i want arbitrary
Guix binaries to work on my system i'd apparently (?) have to put
something like

    export LD_LIBRARY_PATH="$HOME/.guix-profile/lib"

in my .xinitrc, but that would surely break other binaries (those
installed by my usual package manager)?  And if i put

    export LD_LIBRARY_PATH="$HOME/.guix-profile/lib:$LD_LIBRARY_PATH"

in my .xinitrc, then as in case A, surely i won't have fixed my issue?

Sorry to be so thick about this!

Kind regards,
p.