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33 lines
1.4 KiB
Plaintext
33 lines
1.4 KiB
Plaintext
Upgrading the standard initial environment
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For Nix on i686-linux we make use of an environment of statically linked
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tools (see $nixpkgs/stdenv/linux). The first version of these tools were
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compiled outside of Nix, in an impure environment. They are used as some
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magical ingredient to make everything work. To keep these tools more in
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synchronization with the rest of nixpkgs and to make porting of nixpkgs
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to other platforms easier the static versions are now also built with Nix
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and nixpkgs.
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The tools can be found in nixpkgs in:
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- shells/bash-static
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- tools/networking/curl-diet
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- tools/archivers/gnutar-diet
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- tools/compression/gzip-diet
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- tools/compression/bzip2-static
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- tools/text/gnused-diet
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- tools/text/diffutils-diet
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- tools/text/gnupatch-diet
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- tools/misc/findutils-static
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Most packages are compiled with dietlibc, an alternate C library, apart
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from bash and findutils, which are statically linked to glibc. The reason
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we chose dietlibc has various reasons. First of all, curl cannot be built
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statically with glibc. If we do, we get a static binary, but it cannot resolve
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hostnames to IP addresses. glibc dynamically loads functionality at runtime
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to do resolving. When linking with dietlibc this doesn't happen.
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The static tools are not used as part of the input hashing (see Eelco's
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PhD thesis, paragraph 5.4.1), so changing them does not change anything and
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will not force a massive rebuild.
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