92edcb7ebb
The long term goal is a big replace:
{ inherit system platform; } => buildPlatform
crossSystem => hostPlatform
stdenv.cross => targetPlatform
And additionally making sure each is defined even when not cross compiling.
This commit refactors the bootstrapping code along that vision, but leaves
the old identifiers with their null semantics in place so packages can be
modernized incrementally.
54 lines
1.9 KiB
Nix
54 lines
1.9 KiB
Nix
# This file chooses a sane default stdenv given the system, platform, etc.
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#
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# Rather than returning a stdenv, this returns a list of functions---one per
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# each bootstrapping stage. See `./booter.nix` for exactly what this list should
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# contain.
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{ # Args just for stdenvs' usage
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lib
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# Args to pass on to the pkgset builder, too
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, localSystem, crossSystem, config, overlays
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} @ args:
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let
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# The native (i.e., impure) build environment. This one uses the
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# tools installed on the system outside of the Nix environment,
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# i.e., the stuff in /bin, /usr/bin, etc. This environment should
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# be used with care, since many Nix packages will not build properly
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# with it (e.g., because they require GNU Make).
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stagesNative = import ./native args;
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# The Nix build environment.
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stagesNix = import ./nix (args // { bootStages = stagesNative; });
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stagesFreeBSD = import ./freebsd args;
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# On Linux systems, the standard build environment consists of Nix-built
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# instances glibc and the `standard' Unix tools, i.e., the Posix utilities,
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# the GNU C compiler, and so on.
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stagesLinux = import ./linux args;
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inherit (import ./darwin args) stagesDarwin;
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stagesCross = import ./cross args;
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stagesCustom = import ./custom args;
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# Select the appropriate stages for the platform `system'.
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in
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if crossSystem != null then stagesCross
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else if config ? replaceStdenv then stagesCustom
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else { # switch
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"i686-linux" = stagesLinux;
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"x86_64-linux" = stagesLinux;
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"armv5tel-linux" = stagesLinux;
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"armv6l-linux" = stagesLinux;
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"armv7l-linux" = stagesLinux;
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"mips64el-linux" = stagesLinux;
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"powerpc-linux" = /* stagesLinux */ stagesNative;
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"x86_64-darwin" = stagesDarwin;
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"x86_64-solaris" = stagesNix;
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"i686-cygwin" = stagesNative;
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"x86_64-cygwin" = stagesNative;
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"x86_64-freebsd" = stagesFreeBSD;
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}.${localSystem.system} or stagesNative
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