[Nix-dev] linux-headers 2.6.35.14 on a system running 3.2.31?

[Bryce L Nordgren]

I ran nix-store -qR /nix/store/...-php-5.3.15 and discovered linux headers
for the wrong kernel version. (This is a different store location than you
likely have because I compiled PHP with ldap support.) I tried different
php versions...back to 5.3.6 and up to 5.3.18 with the same result.

The offending store location is:
/nix/store/jfcs9xnfbmiwqs224sb0qqsybbfl3sab-linux-headers-2.6.35.14

Running "nix-store -q --referrers
/nix/store/jfcs9xnfbmiwqs224sb0qqsybbfl3sab-linux-headers-2.6.35.14":

/nix/store/jfcs9xnfbmiwqs224sb0qqsybbfl3sab-linux-headers-2.6.35.14
/nix/store/cj7a81wsm1ijwwpkks3725661h3263p5-glibc-2.13
/nix/store/4gv9gby4bn1y0rlw3k0d5lyqy0yfkrc6-gcc-4.6.3
/nix/store/2g2v7d2scy5679ks5zcfj254vp7wb3f0-nix.conf
/nix/store/6qkqf6sppgkf6z9j2ym81hd0j7jsrqwq-nix.conf
/nix/store/7gphifp8gqddk61lycg6w7cjaap42ym3-gcj-4.5.4
/nix/store/cfrnd9g8px060dx0y8hkasv8y81abvgs-closure
/nix/store/f7yysrz8s7vm4vlbdsii77y31cf0i69f-closure
/nix/store/fjf7jhwfl7v9j05lx7y32cgfani9hqa8-runtime-deps
/nix/store/g9w4idrisbar5kksdhv3a9gb2z5m62hg-closure
/nix/store/i8xqdmbp68ql1bfzqlm9w54c266bivmr-closure
/nix/store/pivcg2v1sm36y92k43kky9cy867d5i9q-closure

I don't know what those things ending in "-closure" are, but the above
listings seem to imply to me that anything compiled with gcc or linked
against glibc will incur a dependency on linux headers 2.6.35.14. Shouldn't
there be some rule about requiring the linux-headers version to match the
version of the deployed kernel? The likelihood of unpredictable behavior
would seem to increase as the gap between kernel-headers and kernel does.

I understand this reduces the amount of recompilation when kernels are
upgraded, but it seems sensible to at least keep the kernel/kernel-headers
synced to the same series (2.6, 3.0, 3.2, 3.4).
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