pacman.conf(5)

Synopsis

/etc/pacman.conf

Description

Pacman, using libalpm(3), will attempt to read pacman.conf each time it is invoked. This configuration file is divided into sections or repositories. Each section defines a package repository that pacman can use when searching for packages in --sync mode. The exception to this is the options section, which defines global options.

Example

#
# pacman.conf
#
[options]
NoUpgrade = etc/passwd etc/group etc/shadow
NoUpgrade = etc/fstab

[core]
Include = /etc/pacman.d/core

[custom]
Server = file:///home/pkgs

Each directive must be in CamelCase. If the case isn’t respected, the directive won’t be recognized. For example. noupgrade or NOUPGRADE will not work.

Options

RootDir = path/to/root: Set the default root directory for pacman to install to. This option is used if you want to install a package on a temporary mounted partition which is "owned" by another system, or for a chroot install. NOTE: If database path or logfile are not specified on either the command line or in pacman.conf(5), their default location will be inside this root path.
DBPath = path/to/db/dir: Overrides the default location of the toplevel database directory. A typical default is /var/lib/pacman/. Most users will not need to set this option. NOTE: if specified, this is an absolute path and the root path is not automatically prepended.
CacheDir = path/to/cache/dir: Overrides the default location of the package cache directory. A typical default is /var/cache/pacman/pkg/. Multiple cache directories can be specified, and they are tried in the order they are listed in the config file. If a file is not found in any cache directory, it will be downloaded to the first cache directory with write access. NOTE: this is an absolute path, the root path is not automatically prepended.
GPGDir = path/to/gpg/dir: Overrides the default location of the directory containing configuration files for GnuPG. A typical default is /etc/pacman.d/gnupg/. This directory should contain two files: pubring.gpg and trustdb.gpg. pubring.gpg holds the public keys of all packagers. trustdb.gpg contains a so-called trust database, which specifies that the keys are authentic and trusted. NOTE: this is an absolute path, the root path is not automatically prepended.
LogFile = /path/to/file: Overrides the default location of the pacman log file. A typical default is /var/log/pacman.log. This is an absolute path and the root directory is not prepended.
HoldPkg = package …: If a user tries to --remove a package that’s listed in HoldPkg, pacman will ask for confirmation before proceeding.
IgnorePkg = package …: Instructs pacman to ignore any upgrades for this package when performing a --sysupgrade.
SyncFirst = package …: Instructs pacman to check for newer version of these packages before any sync operation. The user will have the choice to either cancel the current operation and upgrade these packages first or go on with the current operation. This option is typically used with the pacman package. NOTE: when a SyncFirst transaction takes place, no command line flags (e.g. --force) are honored. If this is not ideal, disabling SyncFirst and performing a manual sync of the involved packages may be required.
IgnoreGroup = group …: Instructs pacman to ignore any upgrades for all packages in this group when performing a --sysupgrade.
Include = path: Include another config file. This file can include repositories or general configuration options. Wildcards in the specified paths will get expanded based on glob(7) rules.
Architecture = auto | i686 | x86_64 | …: If set, pacman will only allow installation of packages of the given architecture (e.g. i686, x86_64, etc). The special value auto will use the system architecture, provided by in “uname -m”. If unset, no architecture checks are made. NOTE: packages with the special architecture any can always be installed, as they are meant to be architecture independent.
XferCommand = /path/to/command %u: If set, an external program will be used to download all remote files. All instances of %u will be replaced with the download URL. If present, instances of %o will be replaced with the local filename, plus a “.part” extension, which allows programs like wget to do file resumes properly.
This option is useful for users who experience problems with built-in http/ftp support, or need the more advanced proxy support that comes with utilities like wget.
NoUpgrade = file …: All files listed with a NoUpgrade directive will never be touched during a package install/upgrade, and the new files will be installed with a .pacnew extension. These files refer to files in the package archive, so do not include the leading slash (the RootDir) when specifying them.
NoExtract = file …: All files listed with a NoExtract directive will never be extracted from a package into the filesystem. This can be useful when you don’t want part of a package to be installed. For example, if your httpd root uses an index.php, then you would not want the index.html file to be extracted from the apache package. These files refer to files in the package archive, so do not include the leading slash (the RootDir) when specifying them.
CleanMethod = KeepInstalled &| KeepCurrent: If set to KeepInstalled (the default), the -Sc operation will clean packages that are no longer installed (not present in the local database). If set to KeepCurrent, -Sc will clean outdated packages (not present in any sync database). The second behavior is useful when the package cache is shared among multiple machines, where the local databases are usually different, but the sync databases in use could be the same. If both values are specified, packages are only cleaned if not installed locally and not present in any known sync database.
SigLevel = …: Set the default signature verification level. For more information, see Package and Database Signature Checking below.
UseSyslog: Log action messages through syslog(). This will insert log entries into /var/log/messages or equivalent.
UseDelta: Download delta files instead of complete packages if possible. Requires the xdelta3 program to be installed.
TotalDownload: When downloading, display the amount downloaded, download rate, ETA, and completed percentage of the entire download list rather than the percent of each individual download target. The progress bar is still based solely on the current file download.
CheckSpace: Performs an approximate check for adequate available disk space before installing packages.
VerbosePkgLists: Displays name, version and size of target packages formatted as a table for upgrade, sync and remove operations.

Repository Sections

Each repository section defines a section name and at least one location where the packages can be found. The section name is defined by the string within square brackets (the two above are current and custom). Locations are defined with the Server directive and follow a URL naming structure. If you want to use a local directory, you can specify the full path with a “file://” prefix, as shown above.

A common way to define DB locations utilizes the Include directive. For each repository defined in the configuration file, a single Include directive can contain a file that lists the servers for that repository.

[core]
# use this server first
Server = ftp://ftp.archlinux.org/$repo/os/$arch
# next use servers as defined in the mirrorlist below
Include = {sysconfdir}/pacman.d/mirrorlist

The order of repositories in the configuration files matters; repositories listed first will take precedence over those listed later in the file when packages in two repositories have identical names, regardless of version number.

Include = path: Include another config file. This file can include repositories or general configuration options. Wildcards in the specified paths will get expanded based on glob(7) rules.
Server = url: A full URL to a location where the database, packages, and signatures (if available) for this repository can be found.

During parsing, pacman will define the $repo variable to the name of the current section. This is often utilized in files specified using the Include directive so all repositories can use the same mirrorfile. pacman also defines the $arch variable to the value of Architecture, so the same mirrorfile can even be used for different architectures.
SigLevel = …: Set the signature verification level for this repository. For more information, see Package and Database Signature Checking below.

Package and Database Signature Checking

The SigLevel directive is valid in both the [options] and repository sections. If used in [options], it sets a default value for any repository that does not provide the setting.

If set to Never, no signature checking will take place.
If set to Optional , signatures will be checked when present, but unsigned databases and packages will also be accepted.
If set to Required, signatures will be required on all packages and databases.

Alternatively, you can get more fine-grained control by combining some of the options and prefixes described below. All options in a config file are processed in top-to-bottom, left-to-right fashion, where later options override and/or supplement earlier ones. If SigLevel is specified in a repository section, the starting value is that from the [options] section, or the built-in system default as shown below if not specified.

The options are split into two main groups, described below. Terms used such as “marginally trusted” are terms used by GnuPG, for more information please consult gpg(1).

When to Check

These options control if and when signature checks should take place.

Never: All signature checking is suppressed, even if signatures are present.
Optional (default): Signatures are checked if present; absence of a signature is not an error. An invalid signature is a fatal error, as is a signature from a key not in the keyring.
Required: Signatures are required; absence of a signature or an invalid signature is a fatal error, as is a signature from a key not in the keyring.

What is Allowed

These options control what signatures are viewed as permissible. Note that neither of these options allows acceptance of invalid or expired signatures, or those from revoked keys.

TrustedOnly (default): If a signature is checked, it must be in the keyring and fully trusted; marginal trust does not meet this criteria.
TrustAll: If a signature is checked, it must be in the keyring, but is not required to be assigned a trust level (e.g., unknown or marginal trust).

Options in both groups can additionally be prefixed with either Package or Database, which will cause it to only take effect on the specified object type. For example, PackageTrustAll would allow marginal and unknown trust level signatures for packages.

The built-in default is the following:

SigLevel = Optional TrustedOnly

Using Your Own Repository

If you have numerous custom packages of your own, it is often easier to generate your own custom local repository than install them all with the --upgrade option. All you need to do is generate a compressed package database in the directory with these packages so pacman can find it when run with --refresh.

repo-add /home/pkgs/custom.db.tar.gz /home/pkgs/*.pkg.tar.gz

The above command will generate a compressed database named /home/pkgs/custom.db.tar.gz. Note that the database must be of the form defined in the configuration file and {ext} is a valid compression type as documented in repo-add(8). That’s it! Now configure your custom section in the configuration file as shown in the config example above. Pacman will now use your package repository. If you add new packages to the repository, remember to re-generate the database and use pacman’s --refresh option.

For more information on the repo-add command, see “repo-add --help” or repo-add(8).

Bugs

Bugs? You must be kidding, there are no bugs in this software. But if we happen to be wrong, send us an email with as much detail as possible to pacman-dev@archlinux.org.

Authors

Current maintainers:

Allan McRae <allan@archlinux.org>
Dan McGee <dan@archlinux.org>
Dave Reisner <dreisner@archlinux.org>

Past major contributors:

Judd Vinet <jvinet@zeroflux.org>
Aurelien Foret <aurelien@archlinux.org>
Aaron Griffin <aaron@archlinux.org>
Xavier Chantry <shiningxc@gmail.com>
Nagy Gabor <ngaba@bibl.u-szeged.hu>

For additional contributors, use git shortlog -s on the pacman.git repository.

pacman.conf(5) Manual Page

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