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profiles: Build the man database only if 'man-db' is in the profile.
This allows us to skip the expensive man-db profile hook in most cases. Suggested by Liliana Marie Prikler <liliana.prikler@gmail.com>. * guix/profiles.scm (manual-database/optional): New procedure. (%default-profile-hooks): Use it instead of 'manual-database'. * doc/guix.texi (Documentation): Add footnote about 'man -k' database creation.
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@ -36611,7 +36611,9 @@ $ info -k TLS
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@end example
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@end example
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@noindent
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@noindent
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The command below searches for the same keyword in man pages:
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The command below searches for the same keyword in man
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pages@footnote{The database searched by @command{man -k} is only created
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in profiles that contain the @code{man-db} package.}:
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@example
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@example
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$ man -k TLS
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$ man -k TLS
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@ -1682,6 +1682,16 @@ the entries in MANIFEST."
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`((type . profile-hook)
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`((type . profile-hook)
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(hook . manual-database))))
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(hook . manual-database))))
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(define (manual-database/optional manifest)
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"Return a derivation to build the manual database of MANIFEST, but only if
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MANIFEST contains the \"man-db\" package. Otherwise, return #f."
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;; Building the man database (for "man -k") is expensive and rarely used.
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;; Build it only if the profile also contains "man-db".
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(mlet %store-monad ((man-db (manifest-lookup-package manifest "man-db")))
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(if man-db
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(manual-database manifest)
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(return #f))))
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(define (texlive-configuration manifest)
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(define (texlive-configuration manifest)
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"Return a derivation that builds a TeXlive configuration for the entries in
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"Return a derivation that builds a TeXlive configuration for the entries in
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MANIFEST."
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MANIFEST."
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@ -1784,7 +1794,7 @@ MANIFEST."
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;; This is the list of derivation-returning procedures that are called by
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;; This is the list of derivation-returning procedures that are called by
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;; default when making a non-empty profile.
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;; default when making a non-empty profile.
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(list info-dir-file
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(list info-dir-file
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manual-database
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manual-database/optional
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fonts-dir-file
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fonts-dir-file
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ghc-package-cache-file
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ghc-package-cache-file
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ca-certificate-bundle
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ca-certificate-bundle
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