Bump nixpkgs to 26.05

[xokdvium]

Motivation

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[xokdvium]

@artemist, the unprivileged daemon tests don't work somehow. Could you take a stab at it?

[xokdvium]

Ah great, link-check is broken.

[artemist]

@artemist, the unprivileged daemon tests don't work somehow. Could you take a stab at it?

Sorry I missed this, I'll look into it now

[artemist]

Seems to be a nixpkgs issue. I've made a PR (NixOS/nixpkgs#526816), but if that isn't merged quickly we can add a workaround to the test:

systemd.services.register-nix-paths.serviceConfig = {
  User = config.nix.daemonUser;
  Group = config.nix.daemonGroup;
};

[xokdvium]

@artemist, applied your fix for now. Also figured out the busted link check.

[xokdvium]

Mingw is completely busted here because sqlite with tcl doesn't build. We probably shouldn't block on this

[xokdvium]

@Ericson2314, @amaanq, please look into the CA test failures with an older daemon:

nix-daemon-compat-tests> warning: the daemon is missing the 'realisation-with-path-not-hash' protocol feature, needed to support content-addressing derivations
nix-daemon-compat-tests> warning: the daemon is missing the 'realisation-with-path-not-hash' protocol feature, needed to support content-addressing derivations
nix-daemon-compat-tests>
nix-daemon-compat-tests>
nix-daemon-compat-tests> terminating due to unexpected unrecoverable internal error: Assertion 'outPath' failed in void nix::main_nix_build(int, char**) at /build/source/src/nix/build/../nix-build/nix-build.cc:729
nix-daemon-compat-tests> Nix crashed. This is a bug. Please report this at https://github.com/NixOS/nix/issues with the following information included:
nix-daemon-compat-tests>
nix-daemon-compat-tests> std::terminate() called without exception
nix-daemon-compat-tests> Stack trace:
nix-daemon-compat-tests>  0# 0x0000000000131EEA in nix-build
nix-daemon-compat-tests>  1# 0x00000000000C539A in /nix/store/chqq8mpmpyfi9kgsngya71akv5xicn03-gcc-15.2.0-lib/lib/libstdc++.so.6
nix-daemon-compat-tests>  2# std::unexpected() in /nix/store/chqq8mpmpyfi9kgsngya71akv5xicn03-gcc-15.2.0-lib/lib/libstdc++.so.6
nix-daemon-compat-tests>  3# 0x00000000000D0DFF in /nix/store/scsdg84rrlx75dyvbxybm5n2kav040k6-nix-util-2.35.0pre/lib/libnixutil.so.2.35.0
nix-daemon-compat-tests>  4# __wrap___assert_fail in nix-build
nix-daemon-compat-tests>  5# 0x00000000000E46C0 in nix-build
nix-daemon-compat-tests>  6# nix::mainWrapped(int, char**) in nix-build
nix-daemon-compat-tests>  7# nix::handleExceptions(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, nix::fun<void ()>) in /nix/store/scsdg84rrlx75dyvbxybm5n2kav040k6-nix-util-2.35.0pre/lib/libnixutil.so.2.35.0
nix-daemon-compat-tests>  8# main in nix-build
nix-daemon-compat-tests>  9# 0x000000000002B285 in /nix/store/57iz36553175g3178pvxjij8z5rcsd4n-glibc-2.42-61/lib/libc.so.6
nix-daemon-compat-tests> 10# __libc_start_main in /nix/store/57iz36553175g3178pvxjij8z5rcsd4n-glibc-2.42-61/lib/libc.so.6
nix-daemon-compat-tests> 11# _start in nix-build
nix-daemon-compat-tests>
nix-daemon-compat-tests> ./post-hook.sh: line 23: 64104 Aborted                    (core dumped) nix-build -o "$TEST_ROOT"/result dependencies.nix --post-build-hook "$pushToStore"
nix-daemon-compat-tests> +++(./post-hook.sh:23) onError
nix-daemon-compat-tests> +++(/build/source/tests/functional/common/functions.sh:241) set +x
nix-daemon-compat-tests> post-hook.sh: test failed at:
nix-daemon-compat-tests>   source in ./post-hook.sh:23
nix-daemon-compat-tests>   main in post-hook.sh:10

[Ericson2314]

OK we're on it. Weird because that the compat logic is supposed to be able to pull the output store path out in that old protocol case.