1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
# This file defines the various standard build environments.
#
# On Linux systems, the standard build environment consists of
# Nix-built instances glibc and the `standard' Unix tools, i.e., the
# Posix utilities, the GNU C compiler, and so on. On other systems,
# we use the native C library.
{system, allPackages}: rec {
# Trivial environment used for building other environments.
stdenvInitial = (import ../stdenv/initial) {
name = "stdenv-initial";
inherit system;
};
# The native (i.e., impure) build environment. This one uses the
# tools installed on the system outside of the Nix environment,
# i.e., the stuff in /bin, /usr/bin, etc. This environment should
# be used with care, since many Nix packages will not build properly
# with it (e.g., because they require GNU Make).
stdenvNative = (import ../stdenv/native) {stdenv = stdenvInitial;};
stdenvNativePkgs = allPackages {system = system; stdenv = stdenvNative;};
# The Nix build environment.
stdenvNix = (import ../stdenv/nix) {
bootStdenv = stdenvNative;
pkgs = stdenvNativePkgs;
};
stdenvNixPkgs = allPackages {system = system; stdenv = stdenvNix;};
# The Linux build environment is a fully bootstrapped Nix
# environment, that is, it should contain no external references.
# 1) Build glibc in the native build environment. The result is
# pure (I promise!).
stdenvLinuxGlibc = stdenvNativePkgs.glibc;
# 2) Construct a stdenv consisting of the native build environment,
# plus the pure glibc.
stdenvLinuxBoot1 = (import ../stdenv/nix-linux/boot.nix) {
system = system;
glibc = stdenvLinuxGlibc;
};
# 3) Now we can build packages that will have the Nix glibc.
stdenvLinuxBoot1Pkgs = allPackages {system = system; stdenv = stdenvLinuxBoot1;};
# 4) However, since these packages are built by an native C compiler
# and linker, they may well pick up impure references (e.g., bash
# might end up linking against /lib/libncurses). So repeat, but
# now use the Nix-built tools from step 2/3.
stdenvLinuxBoot2 = (import ../stdenv/nix-linux) {
bootStdenv = stdenvLinuxBoot1;
pkgs = stdenvLinuxBoot1Pkgs;
glibc = stdenvLinuxGlibc;
};
# 5) These packages should be pure.
stdenvLinuxBoot2Pkgs = allPackages {system = system; stdenv = stdenvLinuxBoot2;};
# 6) So finally we can construct the Nix build environment.
stdenvLinux = (import ../stdenv/nix-linux) {
bootStdenv = stdenvLinuxBoot2;
pkgs = stdenvLinuxBoot2Pkgs;
glibc = stdenvLinuxGlibc;
};
# 7) And we can build all packages against that, but we don't
# rebuild stuff from step 6.
stdenvLinuxPkgs =
allPackages {system = system; stdenv = stdenvLinux;} //
{inherit (stdenvLinuxBoot2Pkgs)
gzip bzip2 bash binutils coreutils diffutils findutils gawk gcc
gnumake gnused gnutar gnugrep wget;
} //
{glibc = stdenvLinuxGlibc;};
}
|