blueprint-rules - enumerate resources in blueprints
/etc/ssh :package:apt/openssh-server :service:sysvinit/ssh
blueprint-rules files, typically seen with the
.blueprint-rules extension or with negated meaning as
~/.blueprintignore, contain an ordered list of rules that determine whether resources are included in blueprints.
The general form has its origins in
gitignore(5): any valid
gitignore file is also a valid
Blank lines and lines that begin with a
# will be ignored.
The general form of each line is
:resource, where type is one of
file type is assumed when a rule omits the
The meaning of a rule that begins with a
! is negated.
File resources that do not contain a
/ are matched using
fnmatch(3) against the last component of each file considered. Patterns that contain a
/ but do not begin with a
/ are expanded relative to
/etc before being matched using
Package resources are of the form
/package. Note that the manager is not a colloquial name (for example, "
gem") but rather the specific name of the package manager's package (in the example, on Debian, "
A rule that ignores a package implicitly ignores its dependencies as well. This empirically results in the most compact, yet complete, blueprints. A rule that includes a package takes no such implicit action.
Service resources are of the form
/service. Ignoring a service will prevent Blueprint from taking action on its behalf.
Source resources are of the form
:source:pathname format and must be fully-qualified (that is, begin with a
ssh.blueprint-rules enumerates the resources that install and configure an SSH server, while ignoring
/etc/ssh !/etc/ssh/moduli :package:apt/openssh-server :service:sysvinit/ssh
/etc/blueprintignore is parsed in a negative context - it enumerates resources that should be ignored by
/etc/apt/sources.list /etc/ssl/certs :package:apt/build-essential !:package:apt/build-essential
This example takes advantage of an emergent behavior: by ignoring and immediately unignoring (with the
! rule) the package
blueprint-create(1) will include
build-essential but not its dependencies, thus creating a more compact blueprint.
The Flaming Lips - "The W.A.N.D. (The Will Always Negates Defeat)"
Richard Crowley firstname.lastname@example.org