nixpkgs/lib/systems/inspect.nix

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Convert libs to a fixed-point This does break the API of being able to import any lib file and get its libs, however I'm not sure people did this. I made this while exploring being able to swap out docFn with a stub in #2305, to avoid functor performance problems. I don't know if that is going to move forward (or if it is a problem or not,) but after doing all this work figured I'd put it up anyway :) Two notable advantages to this approach: 1. when a lib inherits another lib's functions, it doesn't automatically get put in to the scope of lib 2. when a lib implements a new obscure functions, it doesn't automatically get put in to the scope of lib Using the test script (later in this commit) I got the following diff on the API: + diff master fixed-lib 11764a11765,11766 > .types.defaultFunctor > .types.defaultTypeMerge 11774a11777,11778 > .types.isOptionType > .types.isType 11781a11786 > .types.mkOptionType 11788a11794 > .types.setType 11795a11802 > .types.types This means that this commit _adds_ to the API, however I can't find a way to fix these last remaining discrepancies. At least none are _removed_. Test script (run with nix-repl in the PATH): #!/bin/sh set -eux repl() { suff=${1:-} echo "(import ./lib)$suff" \ | nix-repl 2>&1 } attrs_to_check() { repl "${1:-}" \ | tr ';' $'\n' \ | grep "\.\.\." \ | cut -d' ' -f2 \ | sed -e "s/^/${1:-}./" \ | sort } summ() { repl "${1:-}" \ | tr ' ' $'\n' \ | sort \ | uniq } deep_summ() { suff="${1:-}" depth="${2:-4}" depth=$((depth - 1)) summ "$suff" for attr in $(attrs_to_check "$suff" | grep -v "types.types"); do if [ $depth -eq 0 ]; then summ "$attr" | sed -e "s/^/$attr./" else deep_summ "$attr" "$depth" | sed -e "s/^/$attr./" fi done } ( cd nixpkgs #git add . #git commit -m "Auto-commit, sorry" || true git checkout fixed-lib deep_summ > ../fixed-lib git checkout master deep_summ > ../master ) if diff master fixed-lib; then echo "SHALLOW MATCH!" fi ( cd nixpkgs git checkout fixed-lib repl .types )
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{ lib }:
Convert libs to a fixed-point This does break the API of being able to import any lib file and get its libs, however I'm not sure people did this. I made this while exploring being able to swap out docFn with a stub in #2305, to avoid functor performance problems. I don't know if that is going to move forward (or if it is a problem or not,) but after doing all this work figured I'd put it up anyway :) Two notable advantages to this approach: 1. when a lib inherits another lib's functions, it doesn't automatically get put in to the scope of lib 2. when a lib implements a new obscure functions, it doesn't automatically get put in to the scope of lib Using the test script (later in this commit) I got the following diff on the API: + diff master fixed-lib 11764a11765,11766 > .types.defaultFunctor > .types.defaultTypeMerge 11774a11777,11778 > .types.isOptionType > .types.isType 11781a11786 > .types.mkOptionType 11788a11794 > .types.setType 11795a11802 > .types.types This means that this commit _adds_ to the API, however I can't find a way to fix these last remaining discrepancies. At least none are _removed_. Test script (run with nix-repl in the PATH): #!/bin/sh set -eux repl() { suff=${1:-} echo "(import ./lib)$suff" \ | nix-repl 2>&1 } attrs_to_check() { repl "${1:-}" \ | tr ';' $'\n' \ | grep "\.\.\." \ | cut -d' ' -f2 \ | sed -e "s/^/${1:-}./" \ | sort } summ() { repl "${1:-}" \ | tr ' ' $'\n' \ | sort \ | uniq } deep_summ() { suff="${1:-}" depth="${2:-4}" depth=$((depth - 1)) summ "$suff" for attr in $(attrs_to_check "$suff" | grep -v "types.types"); do if [ $depth -eq 0 ]; then summ "$attr" | sed -e "s/^/$attr./" else deep_summ "$attr" "$depth" | sed -e "s/^/$attr./" fi done } ( cd nixpkgs #git add . #git commit -m "Auto-commit, sorry" || true git checkout fixed-lib deep_summ > ../fixed-lib git checkout master deep_summ > ../master ) if diff master fixed-lib; then echo "SHALLOW MATCH!" fi ( cd nixpkgs git checkout fixed-lib repl .types )
2017-07-29 02:05:35 +02:00
with lib.attrsets;
with lib.lists;
let
inherit (lib.systems.parse)
kernels
kernelFamilies
significantBytes
cpuTypes
execFormats
;
abis = lib.mapAttrs (_: abi: builtins.removeAttrs abi [ "assertions" ]) lib.systems.parse.abis;
in
rec {
# these patterns are to be matched against {host,build,target}Platform.parsed
patterns = rec {
# The patterns below are lists in sum-of-products form.
#
# Each attribute is list of product conditions; non-list values are treated
# as a singleton list. If *any* product condition in the list matches then
# the predicate matches. Each product condition is tested by
# `lib.attrsets.matchAttrs`, which requires a match on *all* attributes of
# the product.
isi686 = { cpu = cpuTypes.i686; };
isx86_32 = { cpu = { family = "x86"; bits = 32; }; };
isx86_64 = { cpu = { family = "x86"; bits = 64; }; };
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isPower = { cpu = { family = "power"; }; };
isPower64 = { cpu = { family = "power"; bits = 64; }; };
# This ABI is the default in NixOS PowerPC64 BE, but not on mainline GCC,
# so it sometimes causes issues in certain packages that makes the wrong
# assumption on the used ABI.
isAbiElfv2 = [
{ abi = { abi = "elfv2"; }; }
{ abi = { name = "musl"; }; cpu = { family = "power"; bits = 64; }; }
];
isx86 = { cpu = { family = "x86"; }; };
isAarch32 = { cpu = { family = "arm"; bits = 32; }; };
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isArmv7 = map ({ arch, ... }: { cpu = { inherit arch; }; })
(lib.filter (cpu: lib.hasPrefix "armv7" cpu.arch or "")
(lib.attrValues cpuTypes));
isAarch64 = { cpu = { family = "arm"; bits = 64; }; };
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isAarch = { cpu = { family = "arm"; }; };
isMicroBlaze = { cpu = { family = "microblaze"; }; };
isMips = { cpu = { family = "mips"; }; };
isMips32 = { cpu = { family = "mips"; bits = 32; }; };
isMips64 = { cpu = { family = "mips"; bits = 64; }; };
isMips64n32 = { cpu = { family = "mips"; bits = 64; }; abi = { abi = "n32"; }; };
isMips64n64 = { cpu = { family = "mips"; bits = 64; }; abi = { abi = "64"; }; };
isMmix = { cpu = { family = "mmix"; }; };
isRiscV = { cpu = { family = "riscv"; }; };
isRiscV32 = { cpu = { family = "riscv"; bits = 32; }; };
isRiscV64 = { cpu = { family = "riscv"; bits = 64; }; };
isRx = { cpu = { family = "rx"; }; };
isSparc = { cpu = { family = "sparc"; }; };
isSparc64 = { cpu = { family = "sparc"; bits = 64; }; };
isWasm = { cpu = { family = "wasm"; }; };
isMsp430 = { cpu = { family = "msp430"; }; };
isVc4 = { cpu = { family = "vc4"; }; };
isAvr = { cpu = { family = "avr"; }; };
isAlpha = { cpu = { family = "alpha"; }; };
isOr1k = { cpu = { family = "or1k"; }; };
isM68k = { cpu = { family = "m68k"; }; };
isS390 = { cpu = { family = "s390"; }; };
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isS390x = { cpu = { family = "s390"; bits = 64; }; };
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isLoongArch64 = { cpu = { family = "loongarch"; bits = 64; }; };
isJavaScript = { cpu = cpuTypes.javascript; };
is32bit = { cpu = { bits = 32; }; };
is64bit = { cpu = { bits = 64; }; };
isILP32 = [ { cpu = { family = "wasm"; bits = 32; }; } ] ++
map (a: { abi = { abi = a; }; }) [ "n32" "ilp32" "x32" ];
isBigEndian = { cpu = { significantByte = significantBytes.bigEndian; }; };
isLittleEndian = { cpu = { significantByte = significantBytes.littleEndian; }; };
isBSD = { kernel = { families = { inherit (kernelFamilies) bsd; }; }; };
isDarwin = { kernel = { families = { inherit (kernelFamilies) darwin; }; }; };
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isUnix = [ isBSD isDarwin isLinux isSunOS isCygwin isRedox ];
isMacOS = { kernel = kernels.macos; };
isiOS = { kernel = kernels.ios; };
isLinux = { kernel = kernels.linux; };
isSunOS = { kernel = kernels.solaris; };
isFreeBSD = { kernel = { name = "freebsd"; }; };
isNetBSD = { kernel = kernels.netbsd; };
isOpenBSD = { kernel = kernels.openbsd; };
isWindows = { kernel = kernels.windows; };
isCygwin = { kernel = kernels.windows; abi = abis.cygnus; };
isMinGW = { kernel = kernels.windows; abi = abis.gnu; };
isWasi = { kernel = kernels.wasi; };
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isRedox = { kernel = kernels.redox; };
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isGhcjs = { kernel = kernels.ghcjs; };
isGenode = { kernel = kernels.genode; };
isNone = { kernel = kernels.none; };
isAndroid = [ { abi = abis.android; } { abi = abis.androideabi; } ];
isGnu = with abis; map (a: { abi = a; }) [ gnuabi64 gnuabin32 gnu gnueabi gnueabihf gnuabielfv1 gnuabielfv2 ];
isMusl = with abis; map (a: { abi = a; }) [ musl musleabi musleabihf muslabin32 muslabi64 ];
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isUClibc = with abis; map (a: { abi = a; }) [ uclibc uclibceabi uclibceabihf ];
isEfi = [
{ cpu = { family = "arm"; version = "6"; }; }
{ cpu = { family = "arm"; version = "7"; }; }
{ cpu = { family = "arm"; version = "8"; }; }
{ cpu = { family = "riscv"; }; }
{ cpu = { family = "x86"; }; }
];
isElf = { kernel.execFormat = execFormats.elf; };
isMacho = { kernel.execFormat = execFormats.macho; };
};
# given two patterns, return a pattern which is their logical AND.
# Since a pattern is a list-of-disjuncts, this needs to
patternLogicalAnd = pat1_: pat2_:
let
# patterns can be either a list or a (bare) singleton; turn
# them into singletons for uniform handling
pat1 = lib.toList pat1_;
pat2 = lib.toList pat2_;
in
lib.concatMap (attr1:
map (attr2:
lib.recursiveUpdateUntil
(path: subattr1: subattr2:
if (builtins.intersectAttrs subattr1 subattr2) == {} || subattr1 == subattr2
then true
else throw ''
pattern conflict at path ${toString path}:
${builtins.toJSON subattr1}
${builtins.toJSON subattr2}
'')
attr1
attr2
)
pat2)
pat1;
matchAnyAttrs = patterns:
if builtins.isList patterns then attrs: any (pattern: matchAttrs pattern attrs) patterns
else matchAttrs patterns;
predicates = mapAttrs (_: matchAnyAttrs) patterns;
# these patterns are to be matched against the entire
# {host,build,target}Platform structure; they include a `parsed={}` marker so
# that `lib.meta.availableOn` can distinguish them from the patterns which
# apply only to the `parsed` field.
platformPatterns = mapAttrs (_: p: { parsed = {}; } // p) {
isStatic = { isStatic = true; };
};
}