extract-cygwin

Cygwin installer displays the name, version, and description of packages on the wizard, reading those information from setup.ini, and can download packages for your sellection from the mirror site.

This script will extract the information of Cygwin packages from setup.ini and download that package's file to the local installation directory, which works with Powershell 2.0 and later.

Currently, Windows 2000, XP, Vista, or 7 is unsupported by Cygwin Project but the Cygwin Time Machine provides the archive of Cygwin packages. This script can download easily the last version supporting older Windows from that site with -TimeMachine.

Usage

The package information of which target names are specified with -Package, -PackageSet, and/or -Category is extracted, led by x86 or x86_64 for 32-bit or 64-bit architecture. In addition to that, the information of packages needed by others is extracted with -Depends or -Requires.

To extract the information of 32-bit cygwin and git package:

.\Extract-Cygwin.ps1 x86 -Package cygwin, git

With -Download, the package's file in the directory described on that information is downloaded to the local from the mirror site of URL specified with -Mirror or the country of the cuurent region if present.

Run the command as below image if you wish to use 64-bit packages of Base category, download that files to the local dilectory, and install it by Cygwin insaller:

To display the detailed information about this script:

man .\Extract-Cygwin.ps1 -Detailed

Feature

This script outputs an information object for each package extracted from setup.ini. It's displayed to standard output unless received by a variable or pipeline.

The details of setup.ini is defined by setup.ini documentation. Those informations are storing to a custoum object, that structure and members are as follows.

• Name [String]: package name
• Description [String]: short description
• LongDescription [String]: long description, outputs if specified by -Supplement
• Category [Object[]]: category names
• Version [String]: package version
• ReplaceVersions [Object[]]: withdrawn versions (Optional)
• Install [Object]: binary package information, outputs if package or set name is specified by -Package or -PackageSet, or a category name is specified by -Category, or binary package is needed at runtime or to build the source for others
  • Path [String]: binary package file's path relative to mirror directory
  • Size [long]: binary package file's size
  • Hash [String]: hash value for binary package file, outputs if specified by -Supplement
  • Date [DateTime]: binary package file's date, outputs with -Download
  • State [String]: "New", "Unchagned", or "Older" for installed binary specified by -Local
• Source [Object]: source package information, outputs if package name is specified by -Source
  • Path [String]: source package file's path relative to mirror directory
  • Size [long]: source package file's size
  • Hash [String]: hash value for source package file, outputs if specified by -Supplement
  • Date [DateTime]: source package file's date, outputs with -Download
  • State [String]: "New", "Unchagned", or "Older" for installed source specified by -Local
• Depends [Object[]]: necessary package names at runtime
• Conflicts [Object[]]: conflicted packages (Optional), outputs if specified by -Supplement
• Obsoletes [Object[]]: obsoleted packages (Optional), outputs if specified by -Supplement
• Provides [Object[]]: provided packages (Optional)
• BuildDepends [Object[]]: necessary package names to build the source (Optional), outputs if package name is specified by -Source

About the information of Cygwin installer and setup.ini output with -Download, please see below.

• Name [String]: "Cygwin Installer" or "setup.ini"
• Release [String]: "cygwin" (Only setup.ini)
• Arch [String]: "x86" or "x86_64" (Only setup.ini)
• Timestamp [long]: unix time at which download file is created (Only setup.ini)
• MinimumVersion [String]: necessary setup version (Only setup.ini)
• Version [String]: setup version
• Install [Object]:
  • Path [String]: download file's path relative to mirror directory
  • Size [long]: dowanload file's size
  • Date [DateTime]: download file's date
  • State [String]: "New", "Unchagned", or "Older" for already downloaded file
• URL [String]: download URL (Only Cygwin installer)
• Mirror [String]: mirror site to download setup.ini and packages (Only setup.ini)

Note

Run the following line if any scripts can not be executed on your system:

Set-ExecutionPolicy RemoteSigned -Scope Process

License

This script is published under the MIT License.