mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-27 09:23:01 +00:00
396 lines
16 KiB
Nix
396 lines
16 KiB
Nix
# Checks derivation meta and attrs for problems (like brokenness,
|
||
# licenses, etc).
|
||
|
||
{ lib, config, hostPlatform }:
|
||
|
||
let
|
||
# If we're in hydra, we can dispense with the more verbose error
|
||
# messages and make problems easier to spot.
|
||
inHydra = config.inHydra or false;
|
||
# Allow the user to opt-into additional warnings, e.g.
|
||
# import <nixpkgs> { config = { showDerivationWarnings = [ "maintainerless" ]; }; }
|
||
showWarnings = config.showDerivationWarnings;
|
||
|
||
getName = attrs: attrs.name or ("${attrs.pname or "«name-missing»"}-${attrs.version or "«version-missing»"}");
|
||
|
||
allowUnfree = config.allowUnfree
|
||
|| builtins.getEnv "NIXPKGS_ALLOW_UNFREE" == "1";
|
||
|
||
allowNonSource = let
|
||
envVar = builtins.getEnv "NIXPKGS_ALLOW_NONSOURCE";
|
||
in if envVar != ""
|
||
then envVar != "0"
|
||
else config.allowNonSource or true;
|
||
|
||
allowlist = config.allowlistedLicenses or config.whitelistedLicenses or [];
|
||
blocklist = config.blocklistedLicenses or config.blacklistedLicenses or [];
|
||
|
||
areLicenseListsValid =
|
||
if lib.mutuallyExclusive allowlist blocklist then
|
||
true
|
||
else
|
||
throw "allowlistedLicenses and blocklistedLicenses are not mutually exclusive.";
|
||
|
||
hasLicense = attrs:
|
||
attrs ? meta.license;
|
||
|
||
hasAllowlistedLicense = assert areLicenseListsValid; attrs:
|
||
hasLicense attrs && lib.lists.any (l: builtins.elem l allowlist) (lib.lists.toList attrs.meta.license);
|
||
|
||
hasBlocklistedLicense = assert areLicenseListsValid; attrs:
|
||
hasLicense attrs && lib.lists.any (l: builtins.elem l blocklist) (lib.lists.toList attrs.meta.license);
|
||
|
||
allowBroken = config.allowBroken
|
||
|| builtins.getEnv "NIXPKGS_ALLOW_BROKEN" == "1";
|
||
|
||
allowUnsupportedSystem = config.allowUnsupportedSystem
|
||
|| builtins.getEnv "NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM" == "1";
|
||
|
||
isUnfree = licenses: lib.lists.any (l: !l.free or true) licenses;
|
||
|
||
hasUnfreeLicense = attrs:
|
||
hasLicense attrs &&
|
||
isUnfree (lib.lists.toList attrs.meta.license);
|
||
|
||
hasNoMaintainers = attrs:
|
||
attrs ? meta.maintainers && (lib.length attrs.meta.maintainers) == 0;
|
||
|
||
isMarkedBroken = attrs: attrs.meta.broken or false;
|
||
|
||
hasUnsupportedPlatform =
|
||
pkg: !(lib.meta.availableOn hostPlatform pkg);
|
||
|
||
isMarkedInsecure = attrs: (attrs.meta.knownVulnerabilities or []) != [];
|
||
|
||
# Alow granular checks to allow only some unfree packages
|
||
# Example:
|
||
# {pkgs, ...}:
|
||
# {
|
||
# allowUnfree = false;
|
||
# allowUnfreePredicate = (x: pkgs.lib.hasPrefix "vscode" x.name);
|
||
# }
|
||
allowUnfreePredicate = config.allowUnfreePredicate or (x: false);
|
||
|
||
# Check whether unfree packages are allowed and if not, whether the
|
||
# package has an unfree license and is not explicitly allowed by the
|
||
# `allowUnfreePredicate` function.
|
||
hasDeniedUnfreeLicense = attrs:
|
||
hasUnfreeLicense attrs &&
|
||
!allowUnfree &&
|
||
!allowUnfreePredicate attrs;
|
||
|
||
allowInsecureDefaultPredicate = x: builtins.elem (getName x) (config.permittedInsecurePackages or []);
|
||
allowInsecurePredicate = x: (config.allowInsecurePredicate or allowInsecureDefaultPredicate) x;
|
||
|
||
hasAllowedInsecure = attrs:
|
||
!(isMarkedInsecure attrs) ||
|
||
allowInsecurePredicate attrs ||
|
||
builtins.getEnv "NIXPKGS_ALLOW_INSECURE" == "1";
|
||
|
||
|
||
isNonSource = sourceTypes: lib.lists.any (t: !t.isSource) sourceTypes;
|
||
|
||
hasNonSourceProvenance = attrs:
|
||
(attrs ? meta.sourceProvenance) &&
|
||
isNonSource attrs.meta.sourceProvenance;
|
||
|
||
# Allow granular checks to allow only some non-source-built packages
|
||
# Example:
|
||
# { pkgs, ... }:
|
||
# {
|
||
# allowNonSource = false;
|
||
# allowNonSourcePredicate = with pkgs.lib.lists; pkg: !(any (p: !p.isSource && p != lib.sourceTypes.binaryFirmware) pkg.meta.sourceProvenance);
|
||
# }
|
||
allowNonSourcePredicate = config.allowNonSourcePredicate or (x: false);
|
||
|
||
# Check whether non-source packages are allowed and if not, whether the
|
||
# package has non-source provenance and is not explicitly allowed by the
|
||
# `allowNonSourcePredicate` function.
|
||
hasDeniedNonSourceProvenance = attrs:
|
||
hasNonSourceProvenance attrs &&
|
||
!allowNonSource &&
|
||
!allowNonSourcePredicate attrs;
|
||
|
||
showLicenseOrSourceType = value: toString (map (v: v.shortName or "unknown") (lib.lists.toList value));
|
||
showLicense = showLicenseOrSourceType;
|
||
showSourceType = showLicenseOrSourceType;
|
||
|
||
pos_str = meta: meta.position or "«unknown-file»";
|
||
|
||
remediation = {
|
||
unfree = remediate_allowlist "Unfree" (remediate_predicate "allowUnfreePredicate");
|
||
non-source = remediate_allowlist "NonSource" (remediate_predicate "allowNonSourcePredicate");
|
||
broken = remediate_allowlist "Broken" (x: "");
|
||
unsupported = remediate_allowlist "UnsupportedSystem" (x: "");
|
||
blocklisted = x: "";
|
||
insecure = remediate_insecure;
|
||
broken-outputs = remediateOutputsToInstall;
|
||
unknown-meta = x: "";
|
||
maintainerless = x: "";
|
||
};
|
||
remediation_env_var = allow_attr: {
|
||
Unfree = "NIXPKGS_ALLOW_UNFREE";
|
||
Broken = "NIXPKGS_ALLOW_BROKEN";
|
||
UnsupportedSystem = "NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM";
|
||
NonSource = "NIXPKGS_ALLOW_NONSOURCE";
|
||
}.${allow_attr};
|
||
remediation_phrase = allow_attr: {
|
||
Unfree = "unfree packages";
|
||
Broken = "broken packages";
|
||
UnsupportedSystem = "packages that are unsupported for this system";
|
||
NonSource = "packages not built from source";
|
||
}.${allow_attr};
|
||
remediate_predicate = predicateConfigAttr: attrs:
|
||
''
|
||
|
||
Alternatively you can configure a predicate to allow specific packages:
|
||
{ nixpkgs.config.${predicateConfigAttr} = pkg: builtins.elem (lib.getName pkg) [
|
||
"${lib.getName attrs}"
|
||
];
|
||
}
|
||
'';
|
||
|
||
# flakeNote will be printed in the remediation messages below.
|
||
flakeNote = "
|
||
Note: For `nix shell`, `nix build`, `nix develop` or any other Nix 2.4+
|
||
(Flake) command, `--impure` must be passed in order to read this
|
||
environment variable.
|
||
";
|
||
|
||
remediate_allowlist = allow_attr: rebuild_amendment: attrs:
|
||
''
|
||
a) To temporarily allow ${remediation_phrase allow_attr}, you can use an environment variable
|
||
for a single invocation of the nix tools.
|
||
|
||
$ export ${remediation_env_var allow_attr}=1
|
||
${flakeNote}
|
||
b) For `nixos-rebuild` you can set
|
||
{ nixpkgs.config.allow${allow_attr} = true; }
|
||
in configuration.nix to override this.
|
||
${rebuild_amendment attrs}
|
||
c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
|
||
{ allow${allow_attr} = true; }
|
||
to ~/.config/nixpkgs/config.nix.
|
||
'';
|
||
|
||
remediate_insecure = attrs:
|
||
''
|
||
|
||
Known issues:
|
||
'' + (lib.concatStrings (map (issue: " - ${issue}\n") attrs.meta.knownVulnerabilities)) + ''
|
||
|
||
You can install it anyway by allowing this package, using the
|
||
following methods:
|
||
|
||
a) To temporarily allow all insecure packages, you can use an environment
|
||
variable for a single invocation of the nix tools:
|
||
|
||
$ export NIXPKGS_ALLOW_INSECURE=1
|
||
${flakeNote}
|
||
b) for `nixos-rebuild` you can add ‘${getName attrs}’ to
|
||
`nixpkgs.config.permittedInsecurePackages` in the configuration.nix,
|
||
like so:
|
||
|
||
{
|
||
nixpkgs.config.permittedInsecurePackages = [
|
||
"${getName attrs}"
|
||
];
|
||
}
|
||
|
||
c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
|
||
‘${getName attrs}’ to `permittedInsecurePackages` in
|
||
~/.config/nixpkgs/config.nix, like so:
|
||
|
||
{
|
||
permittedInsecurePackages = [
|
||
"${getName attrs}"
|
||
];
|
||
}
|
||
|
||
'';
|
||
|
||
remediateOutputsToInstall = attrs: let
|
||
expectedOutputs = attrs.meta.outputsToInstall or [];
|
||
actualOutputs = attrs.outputs or [ "out" ];
|
||
missingOutputs = builtins.filter (output: ! builtins.elem output actualOutputs) expectedOutputs;
|
||
in ''
|
||
The package ${getName attrs} has set meta.outputsToInstall to: ${builtins.concatStringsSep ", " expectedOutputs}
|
||
|
||
however ${getName attrs} only has the outputs: ${builtins.concatStringsSep ", " actualOutputs}
|
||
|
||
and is missing the following ouputs:
|
||
|
||
${lib.concatStrings (builtins.map (output: " - ${output}\n") missingOutputs)}
|
||
'';
|
||
|
||
handleEvalIssue = { meta, attrs }: { reason , errormsg ? "" }:
|
||
let
|
||
msg = if inHydra
|
||
then "Failed to evaluate ${getName attrs}: «${reason}»: ${errormsg}"
|
||
else ''
|
||
Package ‘${getName attrs}’ in ${pos_str meta} ${errormsg}, refusing to evaluate.
|
||
|
||
'' + (builtins.getAttr reason remediation) attrs;
|
||
|
||
handler = if config ? handleEvalIssue
|
||
then config.handleEvalIssue reason
|
||
else throw;
|
||
in handler msg;
|
||
|
||
handleEvalWarning = { meta, attrs }: { reason , errormsg ? "" }:
|
||
let
|
||
remediationMsg = (builtins.getAttr reason remediation) attrs;
|
||
msg = if inHydra then "Warning while evaluating ${getName attrs}: «${reason}»: ${errormsg}"
|
||
else "Package ${getName attrs} in ${pos_str meta} ${errormsg}, continuing anyway."
|
||
+ (lib.optionalString (remediationMsg != "") "\n${remediationMsg}");
|
||
isEnabled = lib.findFirst (x: x == reason) null showWarnings;
|
||
in if isEnabled != null then builtins.trace msg true else true;
|
||
|
||
# Deep type-checking. Note that calling `type.check` is not enough: see `lib.mkOptionType`'s documentation.
|
||
# We don't include this in lib for now because this function is flawed: it accepts things like `mkIf true 42`.
|
||
typeCheck = type: value: let
|
||
merged = lib.mergeDefinitions [ ] type [
|
||
{ file = lib.unknownModule; inherit value; }
|
||
];
|
||
eval = builtins.tryEval (builtins.deepSeq merged.mergedValue null);
|
||
in eval.success;
|
||
|
||
# TODO make this into a proper module and use the generic option documentation generation?
|
||
metaTypes = with lib.types; rec {
|
||
# These keys are documented
|
||
description = str;
|
||
mainProgram = str;
|
||
longDescription = str;
|
||
branch = str;
|
||
homepage = either (listOf str) str;
|
||
downloadPage = str;
|
||
changelog = either (listOf str) str;
|
||
license = let
|
||
licenseType = either (attrsOf anything) str; # TODO disallow `str` licenses, use a module
|
||
in either licenseType (listOf licenseType);
|
||
sourceProvenance = listOf lib.types.attrs;
|
||
maintainers = listOf (attrsOf anything); # TODO use the maintainer type from lib/tests/maintainer-module.nix
|
||
priority = int;
|
||
pkgConfigModules = listOf str;
|
||
platforms = listOf (either str (attrsOf anything)); # see lib.meta.platformMatch
|
||
hydraPlatforms = listOf str;
|
||
broken = bool;
|
||
unfree = bool;
|
||
unsupported = bool;
|
||
insecure = bool;
|
||
# TODO: refactor once something like Profpatsch's types-simple will land
|
||
# This is currently dead code due to https://github.com/NixOS/nix/issues/2532
|
||
tests = attrsOf (mkOptionType {
|
||
name = "test";
|
||
check = x: x == {} || ( # Accept {} for tests that are unsupported
|
||
isDerivation x &&
|
||
x ? meta.timeout
|
||
);
|
||
merge = lib.options.mergeOneOption;
|
||
});
|
||
timeout = int;
|
||
|
||
# Needed for Hydra to expose channel tarballs:
|
||
# https://github.com/NixOS/hydra/blob/53335323ae79ca1a42643f58e520b376898ce641/doc/manual/src/jobs.md#meta-fields
|
||
isHydraChannel = bool;
|
||
|
||
# Weirder stuff that doesn't appear in the documentation?
|
||
maxSilent = int;
|
||
knownVulnerabilities = listOf str;
|
||
name = str;
|
||
version = str;
|
||
tag = str;
|
||
executables = listOf str;
|
||
outputsToInstall = listOf str;
|
||
position = str;
|
||
available = unspecified;
|
||
isBuildPythonPackage = platforms;
|
||
schedulingPriority = int;
|
||
isFcitxEngine = bool;
|
||
isIbusEngine = bool;
|
||
isGutenprint = bool;
|
||
badPlatforms = platforms;
|
||
};
|
||
|
||
checkMetaAttr = k: v:
|
||
if metaTypes?${k} then
|
||
if typeCheck metaTypes.${k} v then
|
||
null
|
||
else
|
||
"key 'meta.${k}' has invalid value; expected ${metaTypes.${k}.description}, got\n ${
|
||
lib.generators.toPretty { indent = " "; } v
|
||
}"
|
||
else
|
||
"key 'meta.${k}' is unrecognized; expected one of: \n [${lib.concatMapStringsSep ", " (x: "'${x}'") (lib.attrNames metaTypes)}]";
|
||
checkMeta = meta: lib.optionals config.checkMeta (lib.remove null (lib.mapAttrsToList checkMetaAttr meta));
|
||
|
||
checkOutputsToInstall = attrs: let
|
||
expectedOutputs = attrs.meta.outputsToInstall or [];
|
||
actualOutputs = attrs.outputs or [ "out" ];
|
||
missingOutputs = builtins.filter (output: ! builtins.elem output actualOutputs) expectedOutputs;
|
||
in if config.checkMeta
|
||
then builtins.length missingOutputs > 0
|
||
else false;
|
||
|
||
# Check if a derivation is valid, that is whether it passes checks for
|
||
# e.g brokenness or license.
|
||
#
|
||
# Return { valid: "yes", "warn" or "no" } and additionally
|
||
# { reason: String; errormsg: String } if it is not valid, where
|
||
# reason is one of "unfree", "blocklisted", "broken", "insecure", ...
|
||
# !!! reason strings are hardcoded into OfBorg, make sure to keep them in sync
|
||
# Along with a boolean flag for each reason
|
||
checkValidity = attrs:
|
||
# Check meta attribute types first, to make sure it is always called even when there are other issues
|
||
# Note that this is not a full type check and functions below still need to by careful about their inputs!
|
||
let res = checkMeta (attrs.meta or {}); in if res != [] then
|
||
{ valid = "no"; reason = "unknown-meta"; errormsg = "has an invalid meta attrset:${lib.concatMapStrings (x: "\n - " + x) res}\n";
|
||
unfree = false; nonSource = false; broken = false; unsupported = false; insecure = false;
|
||
}
|
||
else {
|
||
unfree = hasUnfreeLicense attrs;
|
||
nonSource = hasNonSourceProvenance attrs;
|
||
broken = isMarkedBroken attrs;
|
||
unsupported = hasUnsupportedPlatform attrs;
|
||
insecure = isMarkedInsecure attrs;
|
||
} // (
|
||
# --- Put checks that cannot be ignored here ---
|
||
if checkOutputsToInstall attrs then
|
||
{ valid = "no"; reason = "broken-outputs"; errormsg = "has invalid meta.outputsToInstall"; }
|
||
|
||
# --- Put checks that can be ignored here ---
|
||
else if hasDeniedUnfreeLicense attrs && !(hasAllowlistedLicense attrs) then
|
||
{ valid = "no"; reason = "unfree"; errormsg = "has an unfree license (‘${showLicense attrs.meta.license}’)"; }
|
||
else if hasBlocklistedLicense attrs then
|
||
{ valid = "no"; reason = "blocklisted"; errormsg = "has a blocklisted license (‘${showLicense attrs.meta.license}’)"; }
|
||
else if hasDeniedNonSourceProvenance attrs then
|
||
{ valid = "no"; reason = "non-source"; errormsg = "contains elements not built from source (‘${showSourceType attrs.meta.sourceProvenance}’)"; }
|
||
else if !allowBroken && attrs.meta.broken or false then
|
||
{ valid = "no"; reason = "broken"; errormsg = "is marked as broken"; }
|
||
else if !allowUnsupportedSystem && hasUnsupportedPlatform attrs then
|
||
{ valid = "no"; reason = "unsupported"; errormsg = "is not supported on ‘${hostPlatform.system}’"; }
|
||
else if !(hasAllowedInsecure attrs) then
|
||
{ valid = "no"; reason = "insecure"; errormsg = "is marked as insecure"; }
|
||
|
||
# --- warnings ---
|
||
# Please also update the type in /pkgs/top-level/config.nix alongside this.
|
||
else if hasNoMaintainers attrs then
|
||
{ valid = "warn"; reason = "maintainerless"; errormsg = "has no maintainers"; }
|
||
# -----
|
||
else { valid = "yes"; });
|
||
|
||
assertValidity = { meta, attrs }: let
|
||
validity = checkValidity attrs;
|
||
in validity // {
|
||
# Throw an error if trying to evaluate a non-valid derivation
|
||
# or, alternatively, just output a warning message.
|
||
handled =
|
||
{
|
||
no = handleEvalIssue { inherit meta attrs; } { inherit (validity) reason errormsg; };
|
||
warn = handleEvalWarning { inherit meta attrs; } { inherit (validity) reason errormsg; };
|
||
yes = true;
|
||
}.${validity.valid};
|
||
};
|
||
|
||
in assertValidity
|