GNU bug report logs - #34935
nanopolish is not reproducible

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From: Ludovic Courtès <ludo <at> gnu.org>
To: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
Cc: 34935 <at> debbugs.gnu.org
Subject: bug#34935: nanopolish is not reproducible
Date: Sat, 23 Mar 2019 18:01:57 +0100

Maxim Cournoyer <maxim.cournoyer <at> gmail.com> skribis:

> $ guix build --check --no-grafts nanopolish
> [...]
> guix build: error: derivation `/gnu/store/7hzcmcwlw83f0wsqmz9nnl1ah54kwks4-nanopolish-0.10.2-1.50e8b5c.drv' may not be deterministic: output `/gnu/store/m7icaq7642zy0gvnqvymcnn8d088a9s0-nanopolish-0.10.2-1.50e8b5c' differs
>
> $ diffoscope "$(guix build nanopolish)" /gnu/store/m7icaq7642zy0gvnqvymcnn8d088a9s0-nanopolish-0.10.2-1.50e8b5c
>
> │ │ │ - 0x000000000000001d (RUNPATH)            Library runpath: [/gnu/store/h90vnqw0nwd0hhm1l5dgxsdrigddfmq4-glibc-2.28/lib:/gnu/store/4sqps8dczv3g7rwbdibfz6rf5jlk7w90-gcc-5.5.0-lib/lib:/gnu/store/nq4lsyipmfb0q7g26ra45rwwqrh3x8zw-zlib-1.2.11/lib:/gnu/store/36i633snnhx4mgbnmm5rbkgk3qdi32ka-hdf5-1.8.21/lib:/gnu/store/x4xpcpsqmini25gkrc0h945ml9r609v5-htslib-1.9/lib:/gnu/store/4sqps8dczv3g7rwbdibfz6rf5jlk7w90-gcc-5.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../..]
> │ │ │ + 0x000000000000001d (RUNPATH)            Library runpath: [/gnu/store/h90vnqw0nwd0hhm1l5dgxsdrigddfmq4-glibc-2.28/lib:/gnu/store/4sqps8dczv3g7rwbdibfz6rf5jlk7w90-gcc-5.5.0-lib/lib:/gnu/store/nq4lsyipmfb0q7g26ra45rwwqrh3x8zw-zlib-1.2.11/lib:/gnu/store/36i633snnhx4mgbnmm5rbkgk3qdi32ka-hdf5-1.8.21/lib:/gnu/store/d25i834bs8wvg8mh36bplxg61r6b7vz9-htslib-1.9/lib:/gnu/store/4sqps8dczv3g7rwbdibfz6rf5jlk7w90-gcc-5.5.0-lib/lib/gcc/x86_64-unknown-linux-gnu/5.5.0/../../..]
>
> The problem seems to lie in htslib.

Aren’t you comparing two different builds, like one grafted the other
ungrafted?

What I do is:

  guix build foo --check -K

and then:

  diffoscope /gnu/store/…-the-thing{,-check}

That way you’re 100% sure you’re comparing two different builds of the
very same derivation.

Ludo’.

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