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packages: Remove now redundant graph procedures.

These procedures are now redundant with those in (guix graph) and are no
longer used since commit a51cbecb.

* gnu/packages.scm (vhash-refq, package-dependencies)
(package-direct-dependents, package-transitive-dependents)
(package-covering-dependents): Remove.
wip-mediagoblin
Ludovic Courtès 7 years ago
parent
commit
724a7d9c74
  1. 61
      gnu/packages.scm

61
gnu/packages.scm

@ -46,10 +46,6 @@
find-best-packages-by-name
find-newest-available-packages
package-direct-dependents
package-transitive-dependents
package-covering-dependents
check-package-freshness
specification->package
@ -262,63 +258,6 @@ VERSION."
((_ version pkgs ...) pkgs)
(#f '()))))
(define* (vhash-refq vhash key #:optional (dflt #f))
"Look up KEY in the vhash VHASH, and return the value (if any) associated
with it. If KEY is not found, return DFLT (or `#f' if no DFLT argument is
supplied). Uses `eq?' for equality testing."
(or (and=> (vhash-assq key vhash) cdr)
dflt))
(define package-dependencies
(memoize
(lambda ()
"Return a vhash keyed by package, and with associated values that are a
list of packages that depend on that package."
(fold-packages
(lambda (package dag)
(fold
(lambda (in d)
;; Insert a graph edge from each of package's inputs to package.
(vhash-consq in
(cons package (vhash-refq d in '()))
(vhash-delq in d)))
dag
(match (package-direct-inputs package)
(((labels packages . _) ...)
packages) )))
vlist-null))))
(define (package-direct-dependents packages)
"Return a list of packages from the distribution that directly depend on the
packages in PACKAGES."
(delete-duplicates
(concatenate
(map (lambda (p)
(vhash-refq (package-dependencies) p '()))
packages))))
(define (package-transitive-dependents packages)
"Return the transitive dependent packages of the distribution packages in
PACKAGES---i.e. the dependents of those packages, plus their dependents,
recursively."
(let ((dependency-dag (package-dependencies)))
(fold-tree
cons '()
(lambda (node) (vhash-refq dependency-dag node))
;; Start with the dependents to avoid including PACKAGES in the result.
(package-direct-dependents packages))))
(define (package-covering-dependents packages)
"Return a minimal list of packages from the distribution whose dependencies
include all of PACKAGES and all packages that depend on PACKAGES."
(let ((dependency-dag (package-dependencies)))
(fold-tree-leaves
cons '()
(lambda (node) (vhash-refq dependency-dag node))
;; Start with the dependents to avoid including PACKAGES in the result.
(package-direct-dependents packages))))
(define %sigint-prompt
;; The prompt to jump to upon SIGINT.

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