John Ericson
7 years ago
parent
e8e57452f4
commit
4cf4d7180d
@ -0,0 +1,155 @@ |
||||
{ lib, config, stdenv |
||||
|
||||
# TODO(@Ericson2314): get off stdenv |
||||
, extraBuildInputs |
||||
, __extraImpureHostDeps |
||||
, extraSandboxProfile |
||||
, hostPlatform, targetPlatform |
||||
}: |
||||
|
||||
rec { |
||||
# `mkDerivation` wraps the builtin `derivation` function to |
||||
# produce derivations that use this stdenv and its shell. |
||||
# |
||||
# See also: |
||||
# |
||||
# * https://nixos.org/nixpkgs/manual/#sec-using-stdenv |
||||
# Details on how to use this mkDerivation function |
||||
# |
||||
# * https://nixos.org/nix/manual/#ssec-derivation |
||||
# Explanation about derivations in general |
||||
mkDerivation = |
||||
{ nativeBuildInputs ? [] |
||||
, buildInputs ? [] |
||||
|
||||
, propagatedNativeBuildInputs ? [] |
||||
, propagatedBuildInputs ? [] |
||||
|
||||
, crossConfig ? null |
||||
, meta ? {} |
||||
, passthru ? {} |
||||
, pos ? # position used in error messages and for meta.position |
||||
(if attrs.meta.description or null != null |
||||
then builtins.unsafeGetAttrPos "description" attrs.meta |
||||
else builtins.unsafeGetAttrPos "name" attrs) |
||||
, separateDebugInfo ? false |
||||
, outputs ? [ "out" ] |
||||
, __impureHostDeps ? [] |
||||
, __propagatedImpureHostDeps ? [] |
||||
, sandboxProfile ? "" |
||||
, propagatedSandboxProfile ? "" |
||||
, ... } @ attrs: |
||||
let |
||||
dependencies = [ |
||||
(map (drv: drv.nativeDrv or drv) nativeBuildInputs) |
||||
(map (drv: drv.crossDrv or drv) buildInputs) |
||||
]; |
||||
propagatedDependencies = [ |
||||
(map (drv: drv.nativeDrv or drv) propagatedNativeBuildInputs) |
||||
(map (drv: drv.crossDrv or drv) propagatedBuildInputs) |
||||
]; |
||||
in let |
||||
|
||||
outputs' = |
||||
outputs ++ |
||||
(if separateDebugInfo then assert targetPlatform.isLinux; [ "debug" ] else []); |
||||
|
||||
dependencies' = let |
||||
justMap = map lib.chooseDevOutputs dependencies; |
||||
nativeBuildInputs = lib.elemAt justMap 0 |
||||
++ lib.optional targetPlatform.isWindows ../../build-support/setup-hooks/win-dll-link.sh; |
||||
buildInputs = lib.elemAt justMap 1 |
||||
# TODO(@Ericson2314): Should instead also be appended to `nativeBuildInputs`. |
||||
++ lib.optional separateDebugInfo ../../build-support/setup-hooks/separate-debug-info.sh; |
||||
in [ nativeBuildInputs buildInputs ]; |
||||
|
||||
propagatedDependencies' = map lib.chooseDevOutputs propagatedDependencies; |
||||
|
||||
derivationArg = |
||||
(removeAttrs attrs |
||||
["meta" "passthru" "crossAttrs" "pos" |
||||
"__impureHostDeps" "__propagatedImpureHostDeps" |
||||
"sandboxProfile" "propagatedSandboxProfile"]) |
||||
// (let |
||||
# TODO(@Ericson2314): Reversing of dep lists is just temporary to avoid Darwin mass rebuild. |
||||
computedSandboxProfile = |
||||
lib.concatMap (input: input.__propagatedSandboxProfile or []) (extraBuildInputs ++ lib.concatLists (lib.reverseList dependencies')); |
||||
computedPropagatedSandboxProfile = |
||||
lib.concatMap (input: input.__propagatedSandboxProfile or []) (lib.concatLists (lib.reverseList propagatedDependencies')); |
||||
computedImpureHostDeps = |
||||
lib.unique (lib.concatMap (input: input.__propagatedImpureHostDeps or []) (extraBuildInputs ++ lib.concatLists (lib.reverseList dependencies'))); |
||||
computedPropagatedImpureHostDeps = |
||||
lib.unique (lib.concatMap (input: input.__propagatedImpureHostDeps or []) (lib.concatLists (lib.reverseList propagatedDependencies'))); |
||||
in |
||||
{ |
||||
builder = attrs.realBuilder or stdenv.shell; |
||||
args = attrs.args or ["-e" (attrs.builder or ./default-builder.sh)]; |
||||
inherit stdenv; |
||||
system = stdenv.system; # TODO(@Ericson2314): be correct about cross compilation |
||||
userHook = config.stdenv.userHook or null; |
||||
__ignoreNulls = true; |
||||
|
||||
nativeBuildInputs = lib.elemAt dependencies' 0; |
||||
buildInputs = lib.elemAt dependencies' 1; |
||||
|
||||
propagatedNativeBuildInputs = lib.elemAt propagatedDependencies' 0; |
||||
propagatedBuildInputs = lib.elemAt propagatedDependencies' 1; |
||||
} // lib.optionalAttrs (hostPlatform.isDarwin) { |
||||
# TODO: remove lib.unique once nix has a list canonicalization primitive |
||||
__sandboxProfile = |
||||
let profiles = [ extraSandboxProfile ] ++ computedSandboxProfile ++ computedPropagatedSandboxProfile ++ [ propagatedSandboxProfile sandboxProfile ]; |
||||
final = lib.concatStringsSep "\n" (lib.filter (x: x != "") (lib.unique profiles)); |
||||
in final; |
||||
__propagatedSandboxProfile = lib.unique (computedPropagatedSandboxProfile ++ [ propagatedSandboxProfile ]); |
||||
__impureHostDeps = computedImpureHostDeps ++ computedPropagatedImpureHostDeps ++ __propagatedImpureHostDeps ++ __impureHostDeps ++ __extraImpureHostDeps ++ [ |
||||
"/dev/zero" |
||||
"/dev/random" |
||||
"/dev/urandom" |
||||
"/bin/sh" |
||||
]; |
||||
__propagatedImpureHostDeps = computedPropagatedImpureHostDeps ++ __propagatedImpureHostDeps; |
||||
} // (if outputs' != [ "out" ] then { |
||||
outputs = outputs'; |
||||
} else { })); |
||||
|
||||
# The meta attribute is passed in the resulting attribute set, |
||||
# but it's not part of the actual derivation, i.e., it's not |
||||
# passed to the builder and is not a dependency. But since we |
||||
# include it in the result, it *is* available to nix-env for queries. |
||||
meta = { } |
||||
# If the packager hasn't specified `outputsToInstall`, choose a default, |
||||
# which is the name of `p.bin or p.out or p`; |
||||
# if he has specified it, it will be overridden below in `// meta`. |
||||
# Note: This default probably shouldn't be globally configurable. |
||||
# Services and users should specify outputs explicitly, |
||||
# unless they are comfortable with this default. |
||||
// { outputsToInstall = |
||||
let |
||||
outs = outputs'; # the value passed to derivation primitive |
||||
hasOutput = out: builtins.elem out outs; |
||||
in [( lib.findFirst hasOutput null (["bin" "out"] ++ outs) )]; |
||||
} |
||||
// attrs.meta or {} |
||||
# Fill `meta.position` to identify the source location of the package. |
||||
// lib.optionalAttrs (pos != null) |
||||
{ position = pos.file + ":" + toString pos.line; } |
||||
; |
||||
|
||||
in |
||||
|
||||
lib.addPassthru |
||||
(derivation (import ./check-meta.nix |
||||
{ |
||||
inherit lib config meta derivationArg; |
||||
mkDerivationArg = attrs; |
||||
inherit (stdenv) system; # TODO: cross-compilation? |
||||
})) |
||||
( { |
||||
overrideAttrs = f: mkDerivation (attrs // (f attrs)); |
||||
inherit meta passthru; |
||||
} // |
||||
# Pass through extra attributes that are not inputs, but |
||||
# should be made available to Nix expressions using the |
||||
# derivation (e.g., in assertions). |
||||
passthru); |
||||
} |
||||
Loading…
Reference in new issue