pyrox.dev
1# This file chooses a sane default stdenv given the system, platform, etc.
2#
3# Rather than returning a stdenv, this returns a list of functions---one per
4# each bootstrapping stage. See `./booter.nix` for exactly what this list should
5# contain.
6
7{ # Args just for stdenvs' usage
8 lib
9 # Args to pass on to the pkgset builder, too
10, localSystem, crossSystem, config, overlays
11} @ args:
12
13let
14 # The native (i.e., impure) build environment. This one uses the
15 # tools installed on the system outside of the Nix environment,
16 # i.e., the stuff in /bin, /usr/bin, etc. This environment should
17 # be used with care, since many Nix packages will not build properly
18 # with it (e.g., because they require GNU Make).
19 stagesNative = import ./native args;
20
21 # The Nix build environment.
22 stagesNix = import ./nix (args // { bootStages = stagesNative; });
23
24 stagesFreeBSD = import ./freebsd args;
25
26 # On Linux systems, the standard build environment consists of Nix-built
27 # instances glibc and the `standard' Unix tools, i.e., the Posix utilities,
28 # the GNU C compiler, and so on.
29 stagesLinux = import ./linux args;
30
31 inherit (import ./darwin args) stagesDarwin;
32
33 stagesCross = import ./cross args;
34
35 stagesCustom = import ./custom args;
36
37 # Select the appropriate stages for the platform `system'.
38in
39 if crossSystem != null then stagesCross
40 else if config ? replaceStdenv then stagesCustom
41 else { # switch
42 "i686-linux" = stagesLinux;
43 "x86_64-linux" = stagesLinux;
44 "armv5tel-linux" = stagesLinux;
45 "armv6l-linux" = stagesLinux;
46 "armv7l-linux" = stagesLinux;
47 "aarch64-linux" = stagesLinux;
48 "mipsel-linux" = stagesLinux;
49 "powerpc-linux" = /* stagesLinux */ stagesNative;
50 "powerpc64le-linux" = stagesLinux;
51 "x86_64-darwin" = stagesDarwin;
52 "x86_64-solaris" = stagesNix;
53 "i686-cygwin" = stagesNative;
54 "x86_64-cygwin" = stagesNative;
55 "x86_64-freebsd" = stagesFreeBSD;
56 }.${localSystem.system} or stagesNative