[Nix-dev] Moving symlinks

[Vladimír Čunát]

Hi.

I don't have a clue what the hell is going on below. I'll be very glad 
if someone helps me.

I have:

$ ls -l 
/nix/store/jb1gpyx64q1n4h63vxm2jnpdjw0pswa0-mesa-noglu-9.1.1/lib/libdricore*

1182	**/libdricore9.1.1.la
24	**/libdricore9.1.1.so -> libdricore9.1.1.so.1.0.0
24	**/libdricore9.1.1.so.1 -> libdricore9.1.1.so.1.0.0
4261464	**/libdricore9.1.1.so.1.0.0

Now in the build process I run mv $out/lib/libdricore* $drivers/lib/
(I double-checked hashes that I *only* changed the postInstall phase):

$ ls -l 
/nix/store/faahr0gq1fapzi7292wyy6hhakwxxqw0-mesa-noglu-9.1.1-drivers/lib/libdricore*

1190		**/libdricore9.1.1.la
19846112	**/libdricore9.1.1.so
24		**/libdricore9.1.1.so.1 -> libdricore9.1.1.so.1.0.0
19741293	**/libdricore9.1.1.so.1.0.0


Not only some links seem to be dereferenced when moving (which 
contradicts mv specification) but also the sizes of the so-files are 
different now! It really looks like a serious bug in coreutils or even 
kernel (e.g. btrfs), unless I'm being completely dumb ATM.


Thanks,
Vlada

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