f5dfe78a1e
This patch add a new argument to Nixpkgs default expression named "overlays".
By default, the value of the argument is either taken from the environment variable `NIXPKGS_OVERLAYS`,
or from the directory `~/.nixpkgs/overlays/`. If the environment variable does not name a valid directory
then this mechanism would fallback on the home directory. If the home directory does not exists it will
fallback on an empty list of overlays.
The overlays directory should contain the list of extra Nixpkgs stages which would be used to extend the
content of Nixpkgs, with additional set of packages. The overlays, i-e directory, files, symbolic links
are used in alphabetical order.
The simplest overlay which extends Nixpkgs with nothing looks like:
```nix
self: super: {
}
```
More refined overlays can use `super` as the basis for building new packages, and `self` as a way to query
the final result of the fix-point.
An example of overlay which extends Nixpkgs with a small set of packages can be found at:
https://github.com/nbp/nixpkgs-mozilla/blob/nixpkgs-overlay/moz-overlay.nix
To use this file, checkout the repository and add a symbolic link to
the `moz-overlay.nix` file in `~/.nixpkgs/overlays` directory.
323 lines
11 KiB
Nix
323 lines
11 KiB
Nix
{ lib
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, system, platform, crossSystem, config, overlays
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# Allow passing in bootstrap files directly so we can test the stdenv bootstrap process when changing the bootstrap tools
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, bootstrapFiles ? let
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fetch = { file, sha256, executable ? true }: import <nix/fetchurl.nix> {
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url = "http://tarballs.nixos.org/stdenv-darwin/x86_64/33f59c9d11b8d5014dfd18cc11a425f6393c884a/${file}";
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inherit sha256 system executable;
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}; in {
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sh = fetch { file = "sh"; sha256 = "1rx4kg6358xdj05z0m139a0zn4f4zfmq4n4vimlmnwyfiyn4x7wk"; };
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bzip2 = fetch { file = "bzip2"; sha256 = "104qnhzk79vkbp2yi0kci6lszgfppvrwk3rgxhry842ly1xz2r7l"; };
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mkdir = fetch { file = "mkdir"; sha256 = "0d91c19xjzmqisncvldv79d7ddzai9l7vcmajhwlwwv74g6da5yl"; };
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cpio = fetch { file = "cpio"; sha256 = "0lw057bmcqls96j0gv1n3mgl66q31mba7i413cbkkaf0rfzz3dxj"; };
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tarball = fetch { file = "bootstrap-tools.cpio.bz2"; sha256 = "13ihbj002pis3fgy1d9c4fi7flca21z9brjsjkklm82h5b4nlwxl"; executable = false; };
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}
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}:
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assert crossSystem == null;
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let
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libSystemProfile = ''
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(import "${./standard-sandbox.sb}")
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'';
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in rec {
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commonPreHook = ''
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export NIX_ENFORCE_PURITY="''${NIX_ENFORCE_PURITY-1}"
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export NIX_ENFORCE_NO_NATIVE="''${NIX_ENFORCE_NO_NATIVE-1}"
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export NIX_IGNORE_LD_THROUGH_GCC=1
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stripAllFlags=" " # the Darwin "strip" command doesn't know "-s"
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export MACOSX_DEPLOYMENT_TARGET=10.10
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export SDKROOT=
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export CMAKE_OSX_ARCHITECTURES=x86_64
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# Workaround for https://openradar.appspot.com/22671534 on 10.11.
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export gl_cv_func_getcwd_abort_bug=no
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'';
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# The one dependency of /bin/sh :(
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binShClosure = ''
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(allow file-read* (literal "/usr/lib/libncurses.5.4.dylib"))
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'';
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bootstrapTools = derivation rec {
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inherit system;
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name = "bootstrap-tools";
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builder = bootstrapFiles.sh; # Not a filename! Attribute 'sh' on bootstrapFiles
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args = [ ./unpack-bootstrap-tools.sh ];
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inherit (bootstrapFiles) mkdir bzip2 cpio tarball;
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__sandboxProfile = binShClosure + libSystemProfile;
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};
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stageFun = step: last: {shell ? "${bootstrapTools}/bin/sh",
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overrides ? (self: super: {}),
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extraPreHook ? "",
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extraBuildInputs,
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allowedRequisites ? null}:
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let
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thisStdenv = import ../generic {
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inherit system config shell extraBuildInputs allowedRequisites;
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name = "stdenv-darwin-boot-${toString step}";
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cc = if isNull last then "/dev/null" else import ../../build-support/cc-wrapper {
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inherit shell;
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inherit (last) stdenv;
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inherit (last.pkgs.darwin) dyld;
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nativeTools = true;
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nativePrefix = bootstrapTools;
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nativeLibc = false;
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libc = last.pkgs.darwin.Libsystem;
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isClang = true;
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cc = { name = "clang-9.9.9"; outPath = bootstrapTools; };
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};
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preHook = stage0.stdenv.lib.optionalString (shell == "${bootstrapTools}/bin/sh") ''
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# Don't patch #!/interpreter because it leads to retained
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# dependencies on the bootstrapTools in the final stdenv.
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dontPatchShebangs=1
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'' + ''
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${commonPreHook}
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${extraPreHook}
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'';
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initialPath = [ bootstrapTools ];
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fetchurlBoot = import ../../build-support/fetchurl {
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stdenv = stage0.stdenv;
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curl = bootstrapTools;
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};
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# The stdenvs themselves don't use mkDerivation, so I need to specify this here
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stdenvSandboxProfile = binShClosure + libSystemProfile;
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extraSandboxProfile = binShClosure + libSystemProfile;
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extraAttrs = { inherit platform; parent = last; };
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overrides = self: super: (overrides self super) // { fetchurl = thisStdenv.fetchurlBoot; };
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};
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in {
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inherit system platform crossSystem config overlays;
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stdenv = thisStdenv;
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};
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stage0 = stageFun 0 null {
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overrides = self: super: with stage0; rec {
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darwin = super.darwin // {
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Libsystem = stdenv.mkDerivation {
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name = "bootstrap-Libsystem";
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buildCommand = ''
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mkdir -p $out
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ln -s ${bootstrapTools}/lib $out/lib
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ln -s ${bootstrapTools}/include-Libsystem $out/include
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'';
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};
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dyld = bootstrapTools;
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};
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libcxx = stdenv.mkDerivation {
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name = "bootstrap-libcxx";
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phases = [ "installPhase" "fixupPhase" ];
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installPhase = ''
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mkdir -p $out/lib $out/include
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ln -s ${bootstrapTools}/lib/libc++.dylib $out/lib/libc++.dylib
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ln -s ${bootstrapTools}/include/c++ $out/include/c++
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'';
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linkCxxAbi = false;
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setupHook = ../../development/compilers/llvm/3.9/libc++/setup-hook.sh;
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};
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libcxxabi = stdenv.mkDerivation {
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name = "bootstrap-libcxxabi";
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buildCommand = ''
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mkdir -p $out/lib
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ln -s ${bootstrapTools}/lib/libc++abi.dylib $out/lib/libc++abi.dylib
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'';
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};
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};
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extraBuildInputs = [];
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};
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persistent0 = _: _: _: {};
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stage1 = prevStage: with prevStage; stageFun 1 prevStage {
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extraPreHook = "export NIX_CFLAGS_COMPILE+=\" -F${bootstrapTools}/Library/Frameworks\"";
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extraBuildInputs = [ pkgs.libcxx ];
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allowedRequisites =
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[ bootstrapTools ] ++ (with pkgs; [ libcxx libcxxabi ]) ++ [ pkgs.darwin.Libsystem ];
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overrides = persistent0 prevStage;
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};
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persistent1 = prevStage: self: super: with prevStage; {
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inherit
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zlib patchutils m4 scons flex perl bison unifdef unzip openssl icu python
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libxml2 gettext sharutils gmp libarchive ncurses pkg-config libedit groff
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openssh sqlite sed serf openldap db cyrus-sasl expat apr-util subversion xz
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findfreetype libssh curl cmake autoconf automake libtool ed cpio coreutils;
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darwin = super.darwin // {
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inherit (darwin)
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dyld Libsystem xnu configd libdispatch libclosure launchd;
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};
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};
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stage2 = prevStage: with prevStage; stageFun 2 prevStage {
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extraPreHook = ''
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export PATH_LOCALE=${pkgs.darwin.locale}/share/locale
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'';
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extraBuildInputs = with pkgs; [ xz darwin.CF libcxx ];
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allowedRequisites =
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[ bootstrapTools ] ++
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(with pkgs; [ xz.bin xz.out libcxx libcxxabi icu.out ]) ++
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(with pkgs.darwin; [ dyld Libsystem CF locale ]);
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overrides = persistent1 prevStage;
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};
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persistent2 = prevStage: self: super: with prevStage; {
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inherit
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patchutils m4 scons flex perl bison unifdef unzip openssl python
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gettext sharutils libarchive pkg-config groff bash subversion
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openssh sqlite sed serf openldap db cyrus-sasl expat apr-util
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findfreetype libssh curl cmake autoconf automake libtool cpio
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libcxx libcxxabi;
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darwin = super.darwin // {
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inherit (darwin)
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dyld Libsystem xnu configd libdispatch libclosure launchd libiconv locale;
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};
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};
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stage3 = prevStage: with prevStage; stageFun 3 prevStage {
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shell = "${pkgs.bash}/bin/bash";
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# We have a valid shell here (this one has no bootstrap-tools runtime deps) so stageFun
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# enables patchShebangs above. Unfortunately, patchShebangs ignores our $SHELL setting
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# and instead goes by $PATH, which happens to contain bootstrapTools. So it goes and
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# patches our shebangs back to point at bootstrapTools. This makes sure bash comes first.
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extraBuildInputs = with pkgs; [ xz darwin.CF libcxx pkgs.bash ];
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extraPreHook = ''
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export PATH=${pkgs.bash}/bin:$PATH
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export PATH_LOCALE=${pkgs.darwin.locale}/share/locale
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'';
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allowedRequisites =
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[ bootstrapTools ] ++
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(with pkgs; [ xz.bin xz.out icu.out bash libcxx libcxxabi ]) ++
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(with pkgs.darwin; [ dyld Libsystem locale ]);
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overrides = persistent2 prevStage;
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};
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persistent3 = prevStage: self: super: with prevStage; {
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inherit
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gnumake gzip gnused bzip2 gawk ed xz patch bash
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libcxxabi libcxx ncurses libffi zlib gmp pcre gnugrep
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coreutils findutils diffutils patchutils;
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llvmPackages = let llvmOverride = llvmPackages.llvm.override { inherit libcxxabi; };
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in super.llvmPackages // {
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llvm = llvmOverride;
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clang-unwrapped = llvmPackages.clang-unwrapped.override { llvm = llvmOverride; };
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};
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darwin = super.darwin // {
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inherit (darwin) dyld Libsystem libiconv locale;
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};
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};
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stage4 = prevStage: with prevStage; stageFun 4 prevStage {
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shell = "${pkgs.bash}/bin/bash";
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extraBuildInputs = with pkgs; [ xz darwin.CF libcxx pkgs.bash ];
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extraPreHook = ''
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export PATH_LOCALE=${pkgs.darwin.locale}/share/locale
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'';
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overrides = persistent3 prevStage;
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};
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persistent4 = prevStage: self: super: with prevStage; {
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inherit
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gnumake gzip gnused bzip2 gawk ed xz patch bash
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libcxxabi libcxx ncurses libffi zlib icu llvm gmp pcre gnugrep
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coreutils findutils diffutils patchutils binutils binutils-raw;
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llvmPackages = super.llvmPackages // {
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inherit (llvmPackages) llvm clang-unwrapped;
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};
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darwin = super.darwin // {
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inherit (darwin) dyld Libsystem cctools libiconv;
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};
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};
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stdenvDarwin = prevStage: let pkgs = prevStage; in import ../generic rec {
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inherit system config;
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inherit (pkgs.stdenv) fetchurlBoot;
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name = "stdenv-darwin";
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preHook = commonPreHook + ''
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export PATH_LOCALE=${pkgs.darwin.locale}/share/locale
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'';
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stdenvSandboxProfile = binShClosure + libSystemProfile;
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extraSandboxProfile = binShClosure + libSystemProfile;
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initialPath = import ../common-path.nix { inherit pkgs; };
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shell = "${pkgs.bash}/bin/bash";
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cc = import ../../build-support/cc-wrapper {
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inherit (pkgs) stdenv;
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inherit shell;
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nativeTools = false;
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nativeLibc = false;
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inherit (pkgs) coreutils binutils gnugrep;
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inherit (pkgs.darwin) dyld;
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cc = pkgs.llvmPackages.clang-unwrapped;
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libc = pkgs.darwin.Libsystem;
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};
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extraBuildInputs = with pkgs; [ darwin.CF libcxx ];
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extraAttrs = {
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inherit platform bootstrapTools;
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libc = pkgs.darwin.Libsystem;
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shellPackage = pkgs.bash;
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};
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allowedRequisites = (with pkgs; [
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xz.out xz.bin libcxx libcxxabi icu.out gmp.out gnumake findutils bzip2.out
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bzip2.bin llvmPackages.llvm zlib.out zlib.dev libffi.out coreutils ed diffutils gnutar
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gzip ncurses.out ncurses.dev ncurses.man gnused bash gawk
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gnugrep llvmPackages.clang-unwrapped patch pcre.out binutils-raw.out
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binutils-raw.dev binutils gettext
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]) ++ (with pkgs.darwin; [
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dyld Libsystem CF cctools libiconv locale
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]);
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overrides = self: super: persistent4 prevStage self super // {
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clang = cc;
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inherit cc;
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};
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};
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stagesDarwin = [
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({}: stage0)
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stage1
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stage2
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stage3
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stage4
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(prevStage: {
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inherit system crossSystem platform config overlays;
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stdenv = stdenvDarwin prevStage;
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})
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];
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}
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