meta_package_manager.managers.pwsh_gallery module

class meta_package_manager.managers.pwsh_gallery.PWSH_Gallery

Bases: PackageManager

PowerShell Gallery client, driven through the modern Microsoft.PowerShell.PSResourceGet module.

Note

Every operation is one PowerShell expression, run non-interactively with no user profile loaded. Reads emit ConvertTo-Json -AsArray and are parsed as JSON; outdated has no native cmdlet, so its installed-versus-gallery comparison runs inside that single pwsh call rather than as one round trip per installed module.

Note

Only pwsh (PowerShell 7+) is supported. Legacy Windows PowerShell 5.1 is intentionally excluded: it ships PowerShellGet v2, which depends on the NuGet provider and prompts to trust PSGallery on first install. PSResourceGet ships bundled with pwsh 7.4+ and supersedes the v2 cmdlets with cleaner, JSON-friendly objects.

Caution

All install and search operations target -Scope CurrentUser so that mpm does not require elevation. upgrade and remove are scope- agnostic and operate on whichever scope holds each module.

Caution

Install-PSResource is invoked with -TrustRepository so the confirmation prompt on the default PSGallery repository is bypassed. Only the default repository is consulted: third-party PSRepository registrations are out of scope.

Initialize cli_errors list.

name: str = 'PowerShell Gallery'

The metaclass derives id = "pwsh-gallery" from the class name (PWSH_Gallery: lowercased, underscore→dash). name here is the official product name shown to users.

homepage_url: str | None = 'https://www.powershellgallery.com'

Home page of the project, only used in documentation for reference.

platforms: frozenset[Platform] | Group | Platform | Iterable[Platform | Group] = frozenset({Platform(id='almalinux', name='AlmaLinux'), Platform(id='alpine', name='Alpine Linux'), Platform(id='altlinux', name='ALT Linux'), Platform(id='amzn', name='Amazon Linux'), Platform(id='android', name='Android'), Platform(id='arch', name='Arch Linux'), Platform(id='buildroot', name='Buildroot'), Platform(id='cachyos', name='CachyOS'), Platform(id='centos', name='CentOS'), Platform(id='chromeos', name='ChromeOS'), Platform(id='clearlinux', name='Clear Linux OS'), Platform(id='cloudlinux', name='CloudLinux OS'), Platform(id='debian', name='Debian'), Platform(id='endeavouros', name='EndeavourOS'), Platform(id='exherbo', name='Exherbo Linux'), Platform(id='fedora', name='Fedora'), Platform(id='generic_linux', name='Generic Linux'), Platform(id='gentoo', name='Gentoo Linux'), Platform(id='guix', name='Guix System'), Platform(id='ibm_powerkvm', name='IBM PowerKVM'), Platform(id='kali', name='Kali Linux'), Platform(id='kvmibm', name='KVM for IBM z Systems'), Platform(id='linuxmint', name='Linux Mint'), Platform(id='macos', name='macOS'), Platform(id='mageia', name='Mageia'), Platform(id='mandriva', name='Mandriva Linux'), Platform(id='manjaro', name='Manjaro Linux'), Platform(id='nixos', name='NixOS'), Platform(id='nobara', name='Nobara'), Platform(id='opensuse', name='openSUSE'), Platform(id='openwrt', name='OpenWrt'), Platform(id='oracle', name='Oracle Linux'), Platform(id='parallels', name='Parallels'), Platform(id='pidora', name='Pidora'), Platform(id='pikaos', name='PikaOS'), Platform(id='raspbian', name='Raspbian'), Platform(id='rhel', name='RedHat Enterprise Linux'), Platform(id='rocky', name='Rocky Linux'), Platform(id='scientific', name='Scientific Linux'), Platform(id='slackware', name='Slackware'), Platform(id='sles', name='SUSE Linux Enterprise Server'), Platform(id='slitaz', name='SliTaz GNU/Linux'), Platform(id='sourcemage', name='Source Mage GNU/Linux'), Platform(id='tuxedo', name='Tuxedo OS'), Platform(id='ubuntu', name='Ubuntu'), Platform(id='ultramarine', name='Ultramarine'), Platform(id='void', name='Void Linux'), Platform(id='windows', name='Windows'), Platform(id='wsl1', name='Windows Subsystem for Linux v1'), Platform(id='wsl2', name='Windows Subsystem for Linux v2'), Platform(id='xenserver', name='XenServer')})

List of platforms supported by the manager.

Allows for a mishmash of platforms and groups of platforms. Will be normalized into a frozenset of Platform instances at instantiation.

requirement: str | None = '>=7.4.0'

PSResourceGet is bundled with PowerShell 7.4+, which is the floor where every operation below runs without installing extra modules.

cli_names: tuple[str, ...] = ('pwsh',)

List of CLI names the package manager is known as.

This list of recognized CLI names is ordered by priority. That way we can influence the search of the right binary.

..hint::

This was helpful in the case of the Python transition from 2.x to 3.x, where multiple versions of the same executable were named python or python3.

By default, this property’s value is derived from the manager’s ID (see the MetaPackageManager.__init__ method above).

pre_args: tuple[str, ...] = ('-NoProfile', '-NonInteractive', '-Command')

Always invoke pwsh non-interactively, with no user profile, and run a single -Command expression. Each operation passes one PowerShell expression as the final argument; subprocess receives a clean argv list so no shell quoting is required between Python and pwsh.

Note

Version detection (pwsh --version) skips pre_args because version calls run_cli with auto_pre_args=False.

version_regexes: tuple[str, ...] = ('PowerShell\\s+(?P<version>\\S+)',)

$ pwsh --version
PowerShell 7.4.6

property installed: Iterator[Package]

Fetch installed PowerShell resources.

Get-InstalledPSResource enumerates every module, script and DSC resource in every installed scope. The Version property is a NuGetVersion object: ConvertTo-Json would otherwise serialise it as a structured {Major, Minor, ...} mapping, so it is projected to a string up-front. ConvertTo-Json -AsArray forces a JSON array even when zero or one resource is returned (single results would otherwise be serialised as a bare object).

$ pwsh -NoProfile -NonInteractive -Command \
    "Get-InstalledPSResource | \
     Select-Object Name, @{n='Version';e={$_.Version.ToString()}} | \
     ConvertTo-Json -AsArray -Depth 2 -Compress"
[{"Name":"PSReadLine","Version":"2.3.6"},
 {"Name":"Pester","Version":"5.5.0"}]

property outdated: Iterator[Package]

Fetch resources with a newer release on the gallery.

PSResourceGet has no built-in outdated cmdlet. The comparison is done server-side in a single pwsh invocation: each installed resource is looked up via Find-PSResource and only emitted when the gallery version is strictly greater. Running the loop inside pwsh avoids the N+1 round trips that a Python-side comparison would cause.

$ pwsh -NoProfile -NonInteractive -Command \
    "Get-InstalledPSResource | ForEach-Object { ... } | \
     ConvertTo-Json -AsArray -Depth 2 -Compress"
[{"Name":"PSReadLine","Installed":"2.3.4","Latest":"2.3.6"}]

search(query, extended, exact)

Search the gallery.

Find-PSResource -Name accepts a wildcard pattern. Wildcards are added around query for fuzzy search and dropped for exact match.

extended search (matching against description) is not supported by Find-PSResource: results are refiltered in Python by the framework when extended=True.

$ pwsh -NoProfile -NonInteractive -Command \
    "Find-PSResource -Name '*readline*' | \
     Select-Object Name, @{n='Version';e={$_.Version.ToString()}}, Description | \
     ConvertTo-Json -AsArray -Depth 2 -Compress"
[{"Name":"PSReadLine","Version":"2.3.6",
  "Description":"Great command line editing..."}]

Return type:

Iterator[Package]

install(package_id, version=None)

Install one resource into the current-user scope.

-TrustRepository bypasses the Untrusted repository prompt that PSGallery emits on first install. -AcceptLicense silently accepts any module-bundled license. -Reinstall is not passed: re-running install on an already-installed resource is a no-op, matching pip install behaviour.

$ pwsh -NoProfile -NonInteractive -Command \
    "Install-PSResource -Name 'PSReadLine' -Scope CurrentUser \
     -TrustRepository -AcceptLicense"

Return type:

str

id: str = 'pwsh-gallery'

Package manager’s ID.

Derived by defaults from the lower-cased class name in which underscores _ are replaced by dashes -.

This ID must be unique among all package manager definitions and lower-case, as they’re used as feature flags for the mpm CLI.

upgrade_all_cli()

Upgrade every installed resource to its latest gallery version.

Scope is intentionally not constrained: any installed resource is eligible, regardless of which scope it lives in.

$ pwsh -NoProfile -NonInteractive -Command \
    "Update-PSResource -TrustRepository -AcceptLicense"

Return type:

tuple[str, ...]

virtual: bool = False

Should we expose the package manager to the user?

Virtual package manager are just skeleton classes used to factorize code among managers of the same family.

upgrade_one_cli(package_id, version=None)

Upgrade a single resource.

$ pwsh -NoProfile -NonInteractive -Command \
    "Update-PSResource -Name 'PSReadLine' -TrustRepository -AcceptLicense"

Return type:

tuple[str, ...]

remove(package_id)

Uninstall a resource from whichever scope holds it.

$ pwsh -NoProfile -NonInteractive -Command \
    "Uninstall-PSResource -Name 'PSReadLine'"

Return type:

str