Re: Qt

[Andreas Enge]

So I added Qt 4.8.5, after disabling a few tests requiring an X server -
adding xorg-server as an input was not enough, as the server would not be
started by the tests, but supposed to be already running. Two "hello world"
programs I found in a tutorial compile.

The gui program complains about a missing icui18n library. Strace shows the
following:

open("/nix/store/z70fv39wa8yrvvqq9zfidsh86z72p4gr-qt-4.8.5/lib/libicui18n.so.50",
 O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/shamfhyg9hcac63y3bll9p50ixxid8vb-glibc-2.18/lib/libicui18n.so.50",
 O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/52998i0m4gr7k35lni8fmg591zsyqamv-gcc-4.7.3/lib/libicui18n.so.50",
 O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/g4cs0ssg7ry4da1615947ild5l4wv6ba-zlib-1.2.7/lib/libicui18n.so.50",
 O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/dly2cqqprdsb4fqabrw0bxm1n42vpi6w-glib-2.38.0/lib/libicui18n.so.50",
 O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/etc/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or 
directory)
open("/nix/store/shamfhyg9hcac63y3bll9p50ixxid8vb-glibc-2.18/lib/libicui18n.so.50",
 O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/z70fv39wa8yrvvqq9zfidsh86z72p4gr-qt-4.8.5/lib/libicui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/shamfhyg9hcac63y3bll9p50ixxid8vb-glibc-2.18/lib/libicui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/52998i0m4gr7k35lni8fmg591zsyqamv-gcc-4.7.3/lib/libicui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/g4cs0ssg7ry4da1615947ild5l4wv6ba-zlib-1.2.7/lib/libicui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/dly2cqqprdsb4fqabrw0bxm1n42vpi6w-glib-2.38.0/lib/libicui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/shamfhyg9hcac63y3bll9p50ixxid8vb-glibc-2.18/lib/libicui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/z70fv39wa8yrvvqq9zfidsh86z72p4gr-qt-4.8.5/lib/icui18n.so.50", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/shamfhyg9hcac63y3bll9p50ixxid8vb-glibc-2.18/lib/icui18n.so.50",
 O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/52998i0m4gr7k35lni8fmg591zsyqamv-gcc-4.7.3/lib/icui18n.so.50", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/g4cs0ssg7ry4da1615947ild5l4wv6ba-zlib-1.2.7/lib/icui18n.so.50",
 O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/dly2cqqprdsb4fqabrw0bxm1n42vpi6w-glib-2.38.0/lib/icui18n.so.50",
 O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/shamfhyg9hcac63y3bll9p50ixxid8vb-glibc-2.18/lib/icui18n.so.50",
 O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/z70fv39wa8yrvvqq9zfidsh86z72p4gr-qt-4.8.5/lib/icui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/shamfhyg9hcac63y3bll9p50ixxid8vb-glibc-2.18/lib/icui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/52998i0m4gr7k35lni8fmg591zsyqamv-gcc-4.7.3/lib/icui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/g4cs0ssg7ry4da1615947ild5l4wv6ba-zlib-1.2.7/lib/icui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/dly2cqqprdsb4fqabrw0bxm1n42vpi6w-glib-2.38.0/lib/icui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/shamfhyg9hcac63y3bll9p50ixxid8vb-glibc-2.18/lib/icui18n", 
O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/nix/store/shamfhyg9hcac63y3bll9p50ixxid8vb-glibc-2.18/share/locale/locale.alias",
 O_RDONLY|O_CLOEXEC) = 4

icu4c was present at the time of compilation, but is not listed as a reference:

$$ ./pre-inst-env guix gc --references 
/nix/store/z70fv39wa8yrvvqq9zfidsh86z72p4gr-qt-4.8.5

/nix/store/2332f9jmabldwz08lqj9yd8znrx9z125-libpng-1.5.17
/nix/store/3xkdzldlqm4sa2p4czjbnybdwq47qlw2-fontconfig-2.10.93
/nix/store/52998i0m4gr7k35lni8fmg591zsyqamv-gcc-4.7.3
/nix/store/8cpwgsdx2njpkdj20i963zfxs0fyqkvi-libjpeg-8d
/nix/store/arsxjcl3kdxxjxf7s1nsvfczis6pckm3-libxrender-0.9.7
/nix/store/asmki6g7ca64sdlcf6ahnjxvxg2x6sgv-libx11-1.5.0
/nix/store/b3c1z47c201gz8gnx5553kw2qb4qdq3b-freetype-2.4.11
/nix/store/dly2cqqprdsb4fqabrw0bxm1n42vpi6w-glib-2.38.0
/nix/store/g4cs0ssg7ry4da1615947ild5l4wv6ba-zlib-1.2.7
/nix/store/i9b6q8wciapn69wifmb1xgpikj4ljjzy-alsa-lib-1.0.27.1
/nix/store/l8bnfq6n6hb2wvx0kxdy141jna8mkns3-mysql-5.1.54
/nix/store/lhb68hrv6hcris5bbr7y894c9g8fj558-libxext-1.3.1
/nix/store/shamfhyg9hcac63y3bll9p50ixxid8vb-glibc-2.18
/nix/store/vmajpkk5ih03g0wik16693fkc638if8k-mesa-8.0.5
/nix/store/z70fv39wa8yrvvqq9zfidsh86z72p4gr-qt-4.8.5

ldd on the offending binary shows no dependency on anything icu related,
and installing icu4c in the user profile does not have any effect.

If I add $HOME/.guix-profile/lib to LD_LIBRARY_PATH, the problem disappears.
I wonder if some dlopen magic is involved. Do you see a solution from
this description?

Andreas