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-rw-r--r--guix/packages.scm14
-rw-r--r--guix/scripts/package.scm46
2 files changed, 45 insertions, 15 deletions
diff --git a/guix/packages.scm b/guix/packages.scm
index d544c34cf8..afbafc70a7 100644
--- a/guix/packages.scm
+++ b/guix/packages.scm
@@ -83,6 +83,8 @@
package-location
hidden-package
hidden-package?
+ package-superseded
+ deprecated-package
package-field-location
package-direct-sources
@@ -306,6 +308,18 @@ user interfaces, ignores."
interfaces."
(assoc-ref (package-properties p) 'hidden?))
+(define (package-superseded p)
+ "Return the package the supersedes P, or #f if P is still current."
+ (assoc-ref (package-properties p) 'superseded))
+
+(define (deprecated-package old-name p)
+ "Return a package called OLD-NAME and marked as superseded by P, a package
+object."
+ (package
+ (inherit p)
+ (name old-name)
+ (properties `((superseded . ,p)))))
+
(define (package-field-location package field)
"Return the source code location of the definition of FIELD for PACKAGE, or
#f if it could not be determined."
diff --git a/guix/scripts/package.scm b/guix/scripts/package.scm
index dc5fcba922..b87aee0be9 100644
--- a/guix/scripts/package.scm
+++ b/guix/scripts/package.scm
@@ -264,25 +264,41 @@ synopsis or description matches all of REGEXPS."
(define (transaction-upgrade-entry entry transaction)
"Return a variant of TRANSACTION that accounts for the upgrade of ENTRY, a
<manifest-entry>."
+ (define (supersede old new)
+ (info (_ "package '~a' has been superseded by '~a'~%")
+ (manifest-entry-name old) (package-name new))
+ (manifest-transaction-install-entry
+ (package->manifest-entry new (manifest-entry-output old))
+ (manifest-transaction-remove-pattern
+ (manifest-pattern
+ (name (manifest-entry-name old))
+ (version (manifest-entry-version old))
+ (output (manifest-entry-output old)))
+ transaction)))
+
(match entry
(($ <manifest-entry> name version output (? string? path))
(match (vhash-assoc name (find-newest-available-packages))
((_ candidate-version pkg . rest)
- (case (version-compare candidate-version version)
- ((>)
- (manifest-transaction-install-entry
- (package->manifest-entry pkg output)
- transaction))
- ((<)
- transaction)
- ((=)
- (let ((candidate-path (derivation->output-path
- (package-derivation (%store) pkg))))
- (if (string=? path candidate-path)
- transaction
- (manifest-transaction-install-entry
- (package->manifest-entry pkg output)
- transaction))))))
+ (match (package-superseded pkg)
+ ((? package? new)
+ (supersede entry new))
+ (#f
+ (case (version-compare candidate-version version)
+ ((>)
+ (manifest-transaction-install-entry
+ (package->manifest-entry pkg output)
+ transaction))
+ ((<)
+ transaction)
+ ((=)
+ (let ((candidate-path (derivation->output-path
+ (package-derivation (%store) pkg))))
+ (if (string=? path candidate-path)
+ transaction
+ (manifest-transaction-install-entry
+ (package->manifest-entry pkg output)
+ transaction))))))))
(#f
transaction)))))