mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-21 22:43:01 +00:00
521 lines
18 KiB
Nix
521 lines
18 KiB
Nix
# Checks derivation meta and attrs for problems (like brokenness,
|
||
# licenses, etc).
|
||
|
||
{ lib, config, hostPlatform }:
|
||
|
||
let
|
||
inherit (lib)
|
||
all
|
||
attrNames
|
||
concatMapStrings
|
||
concatMapStringsSep
|
||
concatStrings
|
||
findFirst
|
||
isDerivation
|
||
length
|
||
concatMap
|
||
mutuallyExclusive
|
||
optional
|
||
optionalAttrs
|
||
optionalString
|
||
optionals
|
||
isAttrs
|
||
isString
|
||
mapAttrs
|
||
;
|
||
|
||
inherit (lib.lists)
|
||
any
|
||
toList
|
||
isList
|
||
elem
|
||
;
|
||
|
||
inherit (lib.meta)
|
||
availableOn
|
||
;
|
||
|
||
inherit (lib.generators)
|
||
toPretty
|
||
;
|
||
|
||
# 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;
|
||
|
||
getNameWithVersion = 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 mutuallyExclusive allowlist blocklist then
|
||
true
|
||
else
|
||
throw "allowlistedLicenses and blocklistedLicenses are not mutually exclusive.";
|
||
|
||
hasLicense = attrs:
|
||
attrs ? meta.license;
|
||
|
||
hasListedLicense = assert areLicenseListsValid; list: attrs:
|
||
length list > 0 && hasLicense attrs && (
|
||
if isList attrs.meta.license then any (l: elem l list) attrs.meta.license
|
||
else elem attrs.meta.license list
|
||
);
|
||
|
||
hasAllowlistedLicense = attrs: hasListedLicense allowlist attrs;
|
||
|
||
hasBlocklistedLicense = attrs: hasListedLicense blocklist attrs;
|
||
|
||
allowBroken = config.allowBroken
|
||
|| builtins.getEnv "NIXPKGS_ALLOW_BROKEN" == "1";
|
||
|
||
allowUnsupportedSystem = config.allowUnsupportedSystem
|
||
|| builtins.getEnv "NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM" == "1";
|
||
|
||
isUnfree = licenses:
|
||
if isAttrs licenses then !licenses.free or true
|
||
# TODO: Returning false in the case of a string is a bug that should be fixed.
|
||
# In a previous implementation of this function the function body
|
||
# was `licenses: lib.lists.any (l: !l.free or true) licenses;`
|
||
# which always evaluates to `!true` for strings.
|
||
else if isString licenses then false
|
||
else any (l: !l.free or true) licenses;
|
||
|
||
hasUnfreeLicense = attrs: hasLicense attrs && isUnfree attrs.meta.license;
|
||
|
||
hasNoMaintainers = attrs:
|
||
attrs ? meta.maintainers && (length attrs.meta.maintainers) == 0;
|
||
|
||
isMarkedBroken = attrs: attrs.meta.broken or false;
|
||
|
||
hasUnsupportedPlatform =
|
||
pkg: !(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 (getNameWithVersion 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: 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") (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: When using `nix shell`, `nix build`, `nix develop`, etc with a flake,
|
||
then pass `--impure` in order to allow use of environment variables.
|
||
";
|
||
|
||
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:
|
||
'' + (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
|
||
${flakeNote}
|
||
b) for `nixos-rebuild` you can add ‘${getNameWithVersion attrs}’ to
|
||
`nixpkgs.config.permittedInsecurePackages` in the configuration.nix,
|
||
like so:
|
||
|
||
{
|
||
nixpkgs.config.permittedInsecurePackages = [
|
||
"${getNameWithVersion attrs}"
|
||
];
|
||
}
|
||
|
||
c) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
|
||
‘${getNameWithVersion attrs}’ to `permittedInsecurePackages` in
|
||
~/.config/nixpkgs/config.nix, like so:
|
||
|
||
{
|
||
permittedInsecurePackages = [
|
||
"${getNameWithVersion 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 ${getNameWithVersion attrs} has set meta.outputsToInstall to: ${builtins.concatStringsSep ", " expectedOutputs}
|
||
|
||
however ${getNameWithVersion attrs} only has the outputs: ${builtins.concatStringsSep ", " actualOutputs}
|
||
|
||
and is missing the following ouputs:
|
||
|
||
${concatStrings (builtins.map (output: " - ${output}\n") missingOutputs)}
|
||
'';
|
||
|
||
handleEvalIssue = { meta, attrs }: { reason , errormsg ? "" }:
|
||
let
|
||
msg = if inHydra
|
||
then "Failed to evaluate ${getNameWithVersion attrs}: «${reason}»: ${errormsg}"
|
||
else ''
|
||
Package ‘${getNameWithVersion 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 ${getNameWithVersion attrs}: «${reason}»: ${errormsg}"
|
||
else "Package ${getNameWithVersion attrs} in ${pos_str meta} ${errormsg}, continuing anyway."
|
||
+ (optionalString (remediationMsg != "") "\n${remediationMsg}");
|
||
isEnabled = findFirst (x: x == reason) null showWarnings;
|
||
in if isEnabled != null then builtins.trace msg true else true;
|
||
|
||
metaTypes = let
|
||
types = import ./meta-types.nix { inherit lib; };
|
||
inherit (types) str union int attrs attrsOf any listOf bool;
|
||
platforms = listOf (union [ str (attrsOf any) ]); # see lib.meta.platformMatch
|
||
in {
|
||
# These keys are documented
|
||
description = str;
|
||
mainProgram = str;
|
||
longDescription = str;
|
||
branch = str;
|
||
homepage = union [
|
||
(listOf str)
|
||
str
|
||
];
|
||
downloadPage = str;
|
||
changelog = union [
|
||
(listOf str)
|
||
str
|
||
];
|
||
license = let
|
||
# TODO disallow `str` licenses, use a module
|
||
licenseType = union [
|
||
(attrsOf any)
|
||
str
|
||
];
|
||
in union [
|
||
(listOf licenseType)
|
||
licenseType
|
||
];
|
||
sourceProvenance = listOf attrs;
|
||
maintainers = listOf (attrsOf any); # TODO use the maintainer type from lib/tests/maintainer-module.nix
|
||
priority = int;
|
||
pkgConfigModules = listOf str;
|
||
inherit platforms;
|
||
hydraPlatforms = listOf str;
|
||
broken = bool;
|
||
unfree = bool;
|
||
unsupported = bool;
|
||
insecure = bool;
|
||
tests = {
|
||
name = "test";
|
||
verify = x: x == {} || ( # Accept {} for tests that are unsupported
|
||
isDerivation x &&
|
||
x ? meta.timeout
|
||
);
|
||
};
|
||
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 = any;
|
||
isBuildPythonPackage = platforms;
|
||
schedulingPriority = int;
|
||
isFcitxEngine = bool;
|
||
isIbusEngine = bool;
|
||
isGutenprint = bool;
|
||
badPlatforms = platforms;
|
||
};
|
||
|
||
checkMetaAttr = let
|
||
# Map attrs directly to the verify function for performance
|
||
metaTypes' = mapAttrs (_: t: t.verify) metaTypes;
|
||
in k: v:
|
||
if metaTypes?${k} then
|
||
if metaTypes'.${k} v then
|
||
[ ]
|
||
else
|
||
[ "key 'meta.${k}' has invalid value; expected ${metaTypes.${k}.name}, got\n ${
|
||
toPretty { indent = " "; } v
|
||
}" ]
|
||
else
|
||
[ "key 'meta.${k}' is unrecognized; expected one of: \n [${concatMapStringsSep ", " (x: "'${x}'") (attrNames metaTypes)}]" ];
|
||
checkMeta = meta: optionals config.checkMeta (concatMap (attr: checkMetaAttr attr meta.${attr}) (attrNames meta));
|
||
|
||
checkOutputsToInstall = attrs: let
|
||
expectedOutputs = attrs.meta.outputsToInstall or [];
|
||
actualOutputs = attrs.outputs or [ "out" ];
|
||
missingOutputs = builtins.filter (output: ! builtins.elem output actualOutputs) expectedOutputs;
|
||
in if config.checkMeta
|
||
then builtins.length missingOutputs > 0
|
||
else false;
|
||
|
||
# Check if a derivation is valid, that is whether it passes checks for
|
||
# e.g brokenness or license.
|
||
#
|
||
# Return { valid: "yes", "warn" or "no" } and additionally
|
||
# { reason: String; errormsg: String } if it is not valid, where
|
||
# reason is one of "unfree", "blocklisted", "broken", "insecure", ...
|
||
# !!! reason strings are hardcoded into OfBorg, make sure to keep them in sync
|
||
# Along with a boolean flag for each reason
|
||
checkValidity =
|
||
let
|
||
validYes = {
|
||
valid = "yes";
|
||
handled = true;
|
||
};
|
||
in
|
||
attrs:
|
||
# Check meta attribute types first, to make sure it is always called even when there are other issues
|
||
# Note that this is not a full type check and functions below still need to by careful about their inputs!
|
||
let
|
||
res = checkMeta (attrs.meta or {});
|
||
in
|
||
if res != [] then
|
||
{ valid = "no"; reason = "unknown-meta"; errormsg = "has an invalid meta attrset:${concatMapStrings (x: "\n - " + x) res}\n"; }
|
||
|
||
# --- Put checks that cannot be ignored here ---
|
||
else 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 (‘${showSourceType attrs.meta.sourceProvenance}’)"; }
|
||
else if !allowBroken && attrs.meta.broken or false then
|
||
{ valid = "no"; reason = "broken"; errormsg = "is marked as broken"; }
|
||
else if !allowUnsupportedSystem && hasUnsupportedPlatform attrs then
|
||
let toPretty' = toPretty {
|
||
allowPrettyValues = true;
|
||
indent = " ";
|
||
};
|
||
in { valid = "no"; reason = "unsupported";
|
||
errormsg = ''
|
||
is not available on the requested hostPlatform:
|
||
hostPlatform.config = "${hostPlatform.config}"
|
||
package.meta.platforms = ${toPretty' (attrs.meta.platforms or [])}
|
||
package.meta.badPlatforms = ${toPretty' (attrs.meta.badPlatforms or [])}
|
||
'';
|
||
}
|
||
else if !(hasAllowedInsecure attrs) then
|
||
{ valid = "no"; reason = "insecure"; errormsg = "is marked as insecure"; }
|
||
|
||
# --- warnings ---
|
||
# Please also update the type in /pkgs/top-level/config.nix alongside this.
|
||
else if hasNoMaintainers attrs then
|
||
{ valid = "warn"; reason = "maintainerless"; errormsg = "has no maintainers"; }
|
||
# -----
|
||
else validYes;
|
||
|
||
|
||
# The meta attribute is passed in the resulting attribute set,
|
||
# but it's not part of the actual derivation, i.e., it's not
|
||
# passed to the builder and is not a dependency. But since we
|
||
# include it in the result, it *is* available to nix-env for queries.
|
||
# Example:
|
||
# meta = checkMeta.commonMeta { inherit validity attrs pos references; };
|
||
# validity = checkMeta.assertValidity { inherit meta attrs; };
|
||
commonMeta = { validity, attrs, pos ? null, references ? [ ] }:
|
||
let
|
||
outputs = attrs.outputs or [ "out" ];
|
||
hasOutput = out: builtins.elem out outputs;
|
||
in
|
||
{
|
||
# `name` derivation attribute includes cross-compilation cruft,
|
||
# is under assert, and is sanitized.
|
||
# Let's have a clean always accessible version here.
|
||
name = attrs.name or "${attrs.pname}-${attrs.version}";
|
||
|
||
# If the packager hasn't specified `outputsToInstall`, choose a default,
|
||
# which is the name of `p.bin or p.out or p` along with `p.man` when
|
||
# present.
|
||
#
|
||
# If the packager has specified it, it will be overridden below in
|
||
# `// meta`.
|
||
#
|
||
# Note: This default probably shouldn't be globally configurable.
|
||
# Services and users should specify outputs explicitly,
|
||
# unless they are comfortable with this default.
|
||
outputsToInstall =
|
||
[
|
||
(
|
||
if hasOutput "bin" then "bin"
|
||
else if hasOutput "out" then "out"
|
||
else findFirst hasOutput null outputs
|
||
)
|
||
]
|
||
++ optional (hasOutput "man") "man";
|
||
}
|
||
// attrs.meta or { }
|
||
# Fill `meta.position` to identify the source location of the package.
|
||
// optionalAttrs (pos != null) {
|
||
position = pos.file + ":" + toString pos.line;
|
||
} // {
|
||
# Expose the result of the checks for everyone to see.
|
||
unfree = hasUnfreeLicense attrs;
|
||
broken = isMarkedBroken attrs;
|
||
unsupported = hasUnsupportedPlatform attrs;
|
||
insecure = isMarkedInsecure attrs;
|
||
|
||
available = validity.valid != "no"
|
||
&& (if config.checkMetaRecursively or false
|
||
then all (d: d.meta.available or true) references
|
||
else true);
|
||
};
|
||
|
||
assertValidity = { meta, attrs }: let
|
||
validity = checkValidity attrs;
|
||
inherit (validity) valid;
|
||
in if validity ? handled then validity else validity // {
|
||
# Throw an error if trying to evaluate a non-valid derivation
|
||
# or, alternatively, just output a warning message.
|
||
handled =
|
||
(
|
||
if valid == "yes" then true
|
||
else if valid == "no" then (
|
||
handleEvalIssue { inherit meta attrs; } { inherit (validity) reason errormsg; }
|
||
)
|
||
else if valid == "warn" then (
|
||
handleEvalWarning { inherit meta attrs; } { inherit (validity) reason errormsg; }
|
||
)
|
||
else throw "Unknown validitiy: '${valid}'"
|
||
);
|
||
};
|
||
|
||
in { inherit assertValidity commonMeta; }
|