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snapcraft.json
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snapcraft.json
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{
"$schema": "http://json-schema.org/draft-04/schema#",
"definitions": {
"grammar-string": {
"oneOf": [
{
"type": "string",
"usage": "<string>"
},
{
"type": "array",
"items": {
"minitems": 1,
"uniqueItems": true,
"oneOf": [
{
"type": "object",
"usage": "on <selector>[,<selector>...]:",
"additionalProperties": false,
"patternProperties": {
"^on\\s+.+$": {
"$ref": "#/definitions/grammar-string"
}
}
},
{
"type": "object",
"usage": "to <selector>[,<selector>...]:",
"additionalProperties": false,
"patternProperties": {
"^to\\s+.+$": {
"$ref": "#/definitions/grammar-string"
}
}
},
{
"type": "object",
"usage": "try:",
"additionalProperties": false,
"patternProperties": {
"^try$": {
"$ref": "#/definitions/grammar-string"
}
}
},
{
"type": "object",
"usage": "else:",
"additionalProperties": false,
"patternProperties": {
"^else$": {
"$ref": "#/definitions/grammar-string"
}
}
},
{
"type": "string",
"pattern": "else fail"
}
]
}
}
]
},
"grammar-array": {
"type": "array",
"minitems": 1,
"uniqueItems": true,
"items": {
"oneOf": [
{
"type": "string",
"usage": "<string>"
},
{
"type": "object",
"usage": "on <selector>[,<selector>...]:",
"additionalProperties": false,
"patternProperties": {
"^on\\s+.+$": {
"$ref": "#/definitions/grammar-array"
}
}
},
{
"type": "object",
"usage": "to <selector>[,<selector>...]:",
"additionalProperties": false,
"patternProperties": {
"^to\\s+.+$": {
"$ref": "#/definitions/grammar-array"
}
}
},
{
"type": "object",
"usage": "try:",
"additionalProperties": false,
"patternProperties": {
"^try$": {
"$ref": "#/definitions/grammar-array"
}
}
},
{
"type": "object",
"usage": "else:",
"additionalProperties": false,
"patternProperties": {
"^else$": {
"$ref": "#/definitions/grammar-array"
}
}
}
]
}
},
"build-environment-grammar": {
"type": "array",
"minitems": 1,
"uniqueItems": true,
"items": {
"oneOf": [
{
"type": "object",
"minProperties": 1,
"maxProperties": 1,
"additionalProperties": {
"type": "string"
}
},
{
"type": "object",
"usage": "on <selector>[,<selector>...]:",
"additionalProperties": false,
"patternProperties": {
"^on\\s+.+$": {
"$ref": "#/definitions/build-environment-grammar"
}
}
},
{
"type": "object",
"usage": "to <selector>[,<selector>...]:",
"additionalProperties": false,
"patternProperties": {
"^to\\s+.+$": {
"$ref": "#/definitions/build-environment-grammar"
}
}
},
{
"type": "object",
"usage": "else:",
"additionalProperties": false,
"patternProperties": {
"^else$": {
"$ref": "#/definitions/build-environment-grammar"
}
}
}
]
}
},
"apt-deb": {
"type": "object",
"description": "deb repositories",
"additionalProperties": false,
"properties": {
"type": {
"type": "string",
"enum": [
"apt"
]
},
"architectures": {
"type": "array",
"minItems": 1,
"uniqueItems": true,
"items": {
"type": "string",
"description": "Architectures to enable, or restrict to, for this repository. Defaults to host architecture."
}
},
"formats": {
"type": "array",
"description": "deb types to enable. Defaults to [deb, deb-src].",
"minItems": 1,
"uniqueItems": true,
"items": {
"type": "string",
"enum": [
"deb",
"deb-src"
]
}
},
"components": {
"type": "array",
"minItems": 0,
"uniqueItems": true,
"items": {
"type": "string",
"description": "Deb repository components to enable, e.g. 'main, multiverse, unstable'"
}
},
"key-id": {
"type": "string",
"description": "GPG key identifier / fingerprint. May be used to identify key file in <project>/snap/keys/<key-id>.asc",
"pattern": "^[A-Z0-9]{40}$"
},
"key-server": {
"type": "string",
"description": "GPG keyserver to use to fetch GPG <key-id>, e.g. 'keyserver.ubuntu.com'. Defaults to keyserver.ubuntu.com if key is not found in project."
},
"path": {
"type": "string",
"description": "Exact path to repository (relative to URL). Cannot be used with suites or components."
},
"suites": {
"type": "array",
"minItems": 1,
"uniqueItems": true,
"items": {
"type": "string",
"description": "Deb repository suites to enable, e.g. 'xenial-updates, xenial-security')."
}
},
"url": {
"type": "string",
"description": "Deb repository URL, e.g. 'http://archive.canonical.com/ubuntu'."
}
},
"required": [
"type",
"key-id",
"url"
],
"validation-failure": "{!r} is not properly configured deb repository"
},
"apt-ppa": {
"type": "object",
"description": "PPA repository",
"additionalProperties": false,
"properties": {
"type": {
"type": "string",
"enum": [
"apt"
]
},
"ppa": {
"type": "string",
"description": "ppa path: e.g. 'canonical-kernel-team/unstable'"
}
},
"required": [
"type",
"ppa"
],
"validation-failure": "{!r} is not properly configured PPA repository"
},
"system-username-scope": {
"type": "string",
"description": "short-form user configuration (<username>: <scope>)",
"enum": [
"shared"
],
"validation-failure": "{!r} is not a valid user scope. Valid scopes include: 'shared'"
},
"environment": {
"type": "object",
"description": "environment entries",
"minItems": 1,
"additionalProperties": {
"anyOf": [
{
"type": "string",
"minLength": 1
},
{
"type": "number"
}
]
}
}
},
"title": "snapcraft schema",
"type": "object",
"properties": {
"build-packages": {
"$ref": "#/definitions/grammar-array",
"description": "top level build packages."
},
"adopt-info": {
"type": "string",
"description": "name of the part that provides source files that will be parsed to extract snap metadata information"
},
"name": {
"description": "name of the snap package",
"allOf": [
{
"$comment": "string, but not too long. the failure message avoids printing repr of the thing, as it could be huge",
"type": "string",
"validation-failure": "snap names need to be strings.",
"maxLength": 40
},
{
"pattern": "^[a-z0-9-]*[a-z][a-z0-9-]*$",
"validation-failure": "{.instance!r} is not a valid snap name. Snap names can only use ASCII lowercase letters, numbers, and hyphens, and must have at least one letter."
},
{
"pattern": "^[^-]",
"validation-failure": "{.instance!r} is not a valid snap name. Snap names cannot start with a hyphen."
},
{
"pattern": "[^-]$",
"validation-failure": "{.instance!r} is not a valid snap name. Snap names cannot end with a hyphen."
},
{
"not": {
"pattern": "--"
},
"validation-failure": "{.instance!r} is not a valid snap name. Snap names cannot have two hyphens in a row."
}
]
},
"title": {
"$comment": "https://forum.snapcraft.io/t/title-length-in-snapcraft-yaml-snap-yaml/8625/10",
"description": "title for the snap",
"type": "string",
"maxLength": 40
},
"architectures": {
"description": "architectures on which to build, and on which the resulting snap runs",
"type": "array",
"minItems": 1,
"uniqueItems": true,
"format": "architectures",
"items": {
"anyOf": [
{
"type": "string"
},
{
"type": "object",
"additionalProperties": false,
"required": [
"build-on"
],
"properties": {
"build-on": {
"anyOf": [
{
"type": "string"
},
{
"type": "array",
"minItems": 1,
"uniqueItems": true
}
]
},
"run-on": {
"anyOf": [
{
"type": "string"
},
{
"type": "array",
"minItems": 1,
"uniqueItems": true
}
]
}
}
}
]
}
},
"version": {
"description": "package version",
"allOf": [
{
"type": "string",
"validation-failure": "snap versions need to be strings. They must also be wrapped in quotes when the value will be interpreted by the YAML parser as a non-string. Examples: '1', '1.2', '1.2.3', git (will be replaced by a git describe based version string)."
},
{
"pattern": "^[a-zA-Z0-9](?:[a-zA-Z0-9:.+~-]*[a-zA-Z0-9+~])?$",
"maxLength": 32,
"validation-failure": "{.instance!r} is not a valid snap version string. Snap versions consist of upper- and lower-case alphanumeric characters, as well as periods, colons, plus signs, tildes, and hyphens. They cannot begin with a period, colon, plus sign, tilde, or hyphen. They cannot end with a period, colon, or hyphen."
}
]
},
"version-script": {
"type": "string",
"description": "a script that echoes the version to set."
},
"license": {
"type": "string",
"description": "the license the package holds"
},
"icon": {
"type": "string",
"description": "path to a 512x512 icon representing the package.",
"format": "icon-path"
},
"summary": {
"type": "string",
"description": "one line summary for the package",
"maxLength": 78
},
"description": {
"type": "string",
"description": "long description of the package",
"pattern": ".+",
"validation-failure": "{.instance!r} is not a valid description string."
},
"assumes": {
"type": "array",
"description": "featureset the snap requires in order to work.",
"minItems": 1,
"uniqueItems": true,
"items": [
{
"type": "string"
}
]
},
"type": {
"type": "string",
"description": "the snap type, the implicit type is 'app'",
"enum": [
"app",
"base",
"gadget",
"kernel",
"snapd"
]
},
"frameworks": {
"type": "array",
"minItems": 1,
"uniqueItems": true,
"items": [
{
"type": "string"
}
]
},
"confinement": {
"type": "string",
"description": "the type of confinement supported by the snap",
"default": "strict",
"enum": [
"classic",
"devmode",
"strict"
]
},
"grade": {
"type": "string",
"description": "the quality grade of the snap",
"default": "stable",
"enum": [
"stable",
"devel"
]
},
"base": {
"type": "string",
"description": "the base snap to use"
},
"build-base": {
"type": "string",
"description": "force a build environment based on base to create a snap"
},
"epoch": {
"description": "the snap epoch, used to specify upgrade paths",
"format": "epoch"
},
"compression": {
"description": "compression to use for snap archive - default is otherwise determined by 'snap pack'",
"type": "string",
"enum": [
"lzo",
"xz"
]
},
"environment": {
"description": "environment entries for the snap as a whole",
"$ref": "#/definitions/environment"
},
"passthrough": {
"type": "object",
"description": "properties to be passed into snap.yaml as-is"
},
"layout": {
"type": "object",
"description": "layout property to be passed into the snap.yaml as-is"
},
"package-repositories": {
"type": "array",
"description": "additional repository configuration.",
"minItems": 0,
"uniqueItems": true,
"items": [
{
"oneOf": [
{
"$ref": "#/definitions/apt-deb"
},
{
"$ref": "#/definitions/apt-ppa"
}
]
}
]
},
"system-usernames": {
"type": "object",
"description": "system username",
"additionalProperties": false,
"validation-failure": "{!r} is not a valid system-username.",
"patternProperties": {
"^snap_(daemon|microk8s|aziotedge|aziotdu)$": {
"oneOf": [
{
"$ref": "#/definitions/system-username-scope"
},
{
"type": "object",
"description": "long-form user configuration",
"additionalProperties": false,
"properties": {
"scope": {
"$ref": "#/definitions/system-username-scope"
}
},
"required": [
"scope"
]
}
]
}
}
},
"donation": {
"oneOf": [
{
"type": "array",
"minItems": 1,
"uniqueItems": true,
"items": [
{
"type": "string"
}
]
},
{
"type": "string"
}
]
},
"issues": {
"oneOf": [
{
"type": "array",
"minItems": 1,
"uniqueItems": true,
"items": [
{
"type": "string"
}
]
},
{
"type": "string"
}
]
},
"contact": {
"oneOf": [
{
"type": "array",
"minItems": 1,
"uniqueItems": true,
"items": [
{
"type": "string"
}
]
},
{
"type": "string"
}
]
},
"source-code": {
"type": "string"
},
"website": {
"type": "string"
},
"apps": {
"type": "object",
"additionalProperties": false,
"validation-failure": "{!r} is not a valid app name. App names consist of upper- and lower-case alphanumeric characters and hyphens. They cannot start or end with a hyphen.",
"patternProperties": {
"^[a-zA-Z0-9](?:-?[a-zA-Z0-9])*$": {
"type": "object",
"required": [
"command"
],
"dependencies": {
"bus-name": [
"daemon"
],
"activates-on": [
"daemon"
],
"refresh-mode": [
"daemon"
],
"stop-mode": [
"daemon"
],
"stop-command": [
"daemon"
],
"start-timeout": [
"daemon"
],
"stop-timeout": [
"daemon"
],
"watchdog-timeout": [
"daemon"
],
"restart-delay": [
"daemon"
],
"post-stop-command": [
"daemon"
],
"reload-command": [
"daemon"
],
"restart-condition": [
"daemon"
],
"before": [
"daemon"
],
"after": [
"daemon"
],
"timer": [
"daemon"
],
"install-mode": [
"daemon"
]
},
"additionalProperties": false,
"properties": {
"autostart": {
"type": "string",
"description": "Name of the desktop file placed by the application in $SNAP_USER_DATA/.config/autostart to indicate that application should be started with the user's desktop session.",
"pattern": "^[A-Za-z0-9. _#:$-]+\\.desktop$",
"validation-failure": "{.instance!r} is not a valid desktop file name (e.g. myapp.desktop)"
},
"common-id": {
"type": "string",
"description": "common identifier across multiple packaging formats"
},
"bus-name": {
"type": "string",
"description": "D-Bus name this service is reachable as",
"pattern": "^[A-Za-z0-9/. _#:$-]*$",
"validation-failure": "{.instance!r} is not a valid bus name."
},
"activates-on": {
"type": "array",
"description": "dbus interface slots this service activates on",
"minitems": 1,
"uniqueItems": true,
"items": {
"type": "string"
}
},
"desktop": {
"type": "string",
"description": "path to a desktop file representing the app, relative to the prime directory"
},
"command": {
"type": "string",
"description": "command executed to run the binary"
},
"completer": {
"type": "string",
"description": "bash completion script relative to the prime directory"
},
"stop-command": {
"type": "string",
"description": "command executed to stop a service"
},
"post-stop-command": {
"type": "string",
"description": "command executed after stopping a service"
},
"start-timeout": {
"type": "string",
"pattern": "^[0-9]+(ns|us|ms|s|m)*$",
"validation-failure": "{.instance!r} is not a valid timeout value.",
"description": "Optional time to wait for daemon to start - <n>ns | <n>us | <n>ms | <n>s | <n>m"
},
"stop-timeout": {
"type": "string",
"pattern": "^[0-9]+(ns|us|ms|s|m)*$",
"validation-failure": "{.instance!r} is not a valid timeout value.",
"description": "Optional time to wait for daemon to stop - <n>ns | <n>us | <n>ms | <n>s | <n>m"
},
"watchdog-timeout": {
"type": "string",
"pattern": "^[0-9]+(ns|us|ms|s|m)*$",
"validation-failure": "{.instance!r} is not a valid timeout value.",
"description": "Service watchdog timeout - <n>ns | <n>us | <n>ms | <n>s | <n>m"
},
"reload-command": {
"type": "string",
"description": "Command to use to ask the service to reload its configuration."
},
"restart-delay": {
"type": "string",
"pattern": "^[0-9]+(ns|us|ms|s|m)*$",
"validation-failure": "{.instance!r} is not a valid delay value.",
"description": "Delay between service restarts - <n>ns | <n>us | <n>ms | <n>s | <n>m. Defaults to unset. See the systemd.service manual on RestartSec for details."
},
"timer": {
"type": "string",
"description": "The service is activated by a timer, app must be a daemon. (systemd.time calendar event string)"
},
"daemon": {
"type": "string",
"description": "signals that the app is a service.",
"enum": [
"simple",
"forking",
"oneshot",
"notify",
"dbus"
]
},
"after": {
"type": "array",
"description": "List of applications that are ordered to be started after the current one",
"minitems": 1,
"uniqueItems": true,
"items": {
"type": "string"
}
},
"before": {
"type": "array",
"description": "List of applications that are ordered to be started before the current one",
"minitems": 1,
"uniqueItems": true,
"items": {
"type": "string"
}
},
"refresh-mode": {
"type": "string",
"description": "controls if the app should be restarted at all",
"enum": [
"endure",
"restart",
"ignore-running"
]
},
"stop-mode": {
"type": "string",
"description": "controls how the daemon should be stopped",
"enum": [
"sigterm",
"sigterm-all",
"sighup",
"sighup-all",
"sigusr1",
"sigusr1-all",
"sigusr2",
"sigusr2-all",
"sigint",
"sigint-all"
]
},
"restart-condition": {
"type": "string",
"enum": [
"on-success",
"on-failure",
"on-abnormal",
"on-abort",
"on-watchdog",
"always",
"never"
]
},
"install-mode": {
"type": "string",
"enum": [
"enable",
"disable"
]
},
"slots": {
"type": "array",
"minitems": 1,
"uniqueItems": true,
"items": {
"type": "string"
}
},
"plugs": {
"type": "array",
"minitems": 1,
"uniqueItems": true,
"items": {
"type": "string"
}
},
"aliases": {
"type": "array",
"uniqueItems": true,
"items": {
"type": "string",
"pattern": "^[a-zA-Z0-9][-_.a-zA-Z0-9]*$",
"validation-failure": "{.instance!r} is not a valid alias. Aliases must be strings, begin with an ASCII alphanumeric character, and can only use ASCII alphanumeric characters and the following special characters: . _ -"
}
},
"environment": {
"description": "environment entries for the specific app.",
"$ref": "#/definitions/environment"
},
"adapter": {
"$comment": "Full should be the default, but it requires command-chain which isn't available in snapd until 2.36, which isn't yet stable. Until 2.36 is generally available, continue with legacy as the default.",
"type": "string",
"description": "What kind of wrapper to generate for the given command",
"enum": [
"none",
"legacy",
"full"
],
"default": "legacy"
},
"command-chain": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[A-Za-z0-9/._#:$-]*$",
"validation-failure": "{.instance!r} is not a valid command-chain entry. Command chain entries must be strings, and can only use ASCII alphanumeric characters and the following special characters: / . _ # : $ -"
}
},
"sockets": {
"type": "object",
"additionalProperties": false,
"validation-failure": "{!r} is not a valid socket name. Socket names consist of lower-case alphanumeric characters and hyphens.",
"patternProperties": {
"^[a-z][a-z0-9_-]*$": {
"type": "object",
"required": [
"listen-stream"
],
"description": "Sockets for automatic service activation",
"additionalProperties": false,
"properties": {
"listen-stream": {
"anyOf": [
{
"type": "integer",
"usage": "port number, an integer between 1 and 65535",
"minimum": 1,
"maximum": 65535
},
{
"type": "string",
"usage": "socket path, a string"
}
]
},
"socket-mode": {
"type": "integer"
}
}
}
}
},
"passthrough": {
"type": "object",
"description": "properties to be passed into snap.yaml as-is"
},
"extensions": {
"type": "array",
"minitems": 1,
"uniqueItems": true,
"items": {
"enum": [
"flutter-stable",
"flutter-beta",
"flutter-dev",
"flutter-master",
"gnome",
"gnome-3-28",
"gnome-3-34",
"gnome-3-38",
"kde-neon",
"ros1-noetic",
"ros1-noetic-desktop",
"ros1-noetic-perception",
"ros1-noetic-robot",
"ros1-noetic-ros-base",
"ros1-noetic-ros-core",
"ros2-foxy",
"ros2-foxy-ros-base",
"ros2-foxy-ros-core",
"ros2-foxy-desktop",
"ros2-humble",
"ros2-humble-ros-base",
"ros2-humble-ros-core",
"ros2-humble-desktop"
]
}
}
}
}
}
},
"hooks": {
"type": "object",
"additionalProperties": false,
"validation-failure": "{!r} is not a valid hook name. Hook names consist of lower-case alphanumeric characters and hyphens. They cannot start or end with a hyphen.",
"patternProperties": {
"^[a-z](?:-?[a-z0-9])*$": {
"type": "object",
"additionalProperties": false,
"properties": {
"command-chain": {
"type": "array",
"items": {
"type": "string",
"pattern": "^[A-Za-z0-9/._#:$-]*$",
"validation-failure": "{.instance!r} is not a valid command-chain entry. Command chain entries must be strings, and can only use ASCII alphanumeric characters and the following special characters: / . _ # : $ -"
}
},
"environment": {
"description": "environment entries for this hook",
"$ref": "#/definitions/environment"
},
"plugs": {
"type": "array",
"minitems": 1,
"uniqueItems": true,
"items": {
"type": "string"
}
},
"passthrough": {
"type": "object",
"description": "properties to be passed into snap.yaml as-is"
}
}
}
}
},
"parts": {
"type": "object",
"minProperties": 1,
"additionalProperties": false,
"validation-failure": "{!r} is not a valid part name. Part names consist of lower-case alphanumeric characters, hyphens and plus signs. As a special case, 'plugins' is also not a valid part name.",
"patternProperties": {
"^(?!plugins$)[a-z0-9][a-z0-9+-]*$": {
"type": [
"object",
"null"
],
"minProperties": 1,
"required": [
"plugin"
],
"properties": {
"plugin": {
"type": "string",
"description": "plugin name"
},
"source": {
"$ref": "#/definitions/grammar-string"
},
"source-checksum": {
"type": "string",