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-rw-r--r--guix/packages.scm29
-rw-r--r--tests/packages.scm34
2 files changed, 63 insertions, 0 deletions
diff --git a/guix/packages.scm b/guix/packages.scm
index dfb4c680be..d3fa72fd09 100644
--- a/guix/packages.scm
+++ b/guix/packages.scm
@@ -109,6 +109,9 @@
deprecated-package
package-field-location
+ this-package-input
+ this-package-native-input
+
lookup-package-input
lookup-package-native-input
lookup-package-propagated-input
@@ -547,6 +550,32 @@ object."
#f)))
(_ #f)))
+(define (package-input package name)
+ "Return the package input NAME of PACKAGE--i.e., an input
+from the ‘inputs’ or ‘propagated-inputs’ field. Native inputs are not
+considered. If this input does not exist, return #f instead."
+ (and=> (or (assoc-ref (package-inputs package) name)
+ (assoc-ref (package-propagated-inputs package) name))
+ car))
+
+(define (package-native-input package name)
+ "Return the native package input NAME of PACKAGE--i.e., an input
+from the ‘native-inputs’ field. If this native input does not exist,
+return #f instead."
+ (and=> (assoc-ref (package-native-inputs package) name)
+ car))
+
+(define-syntax-rule (this-package-input name)
+ "Return the input NAME of the package being defined--i.e., an input
+from the ‘inputs’ or ‘propagated-inputs’ field. Native inputs are not
+considered. If this input does not exist, return #f instead."
+ (package-input this-package name))
+
+(define-syntax-rule (this-package-native-input name)
+ "Return the native package input NAME of the package being defined--i.e.,
+an input from the ‘native-inputs’ field. If this native input does not
+exist, return #f instead."
+ (package-native-input this-package name))
;; Error conditions.
diff --git a/tests/packages.scm b/tests/packages.scm
index 9ec4dd1928..2e1ca10dc4 100644
--- a/tests/packages.scm
+++ b/tests/packages.scm
@@ -2,6 +2,7 @@
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2018 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
+;;; Copyright © 2021 Maxime Devos <maximedevos@telenet.be>
;;;
;;; This file is part of GNU Guix.
;;;
@@ -1864,6 +1865,39 @@
(package-location (specification->package "guile@2"))
(specification->location "guile@2"))
+(test-eq "this-package-input, exists"
+ hello
+ (package-arguments
+ (dummy-package "a"
+ (inputs `(("hello" ,hello)))
+ (arguments (this-package-input "hello")))))
+
+(test-eq "this-package-input, exists in propagated-inputs"
+ hello
+ (package-arguments
+ (dummy-package "a"
+ (propagated-inputs `(("hello" ,hello)))
+ (arguments (this-package-input "hello")))))
+
+(test-eq "this-package-input, does not exist"
+ #f
+ (package-arguments
+ (dummy-package "a"
+ (arguments (this-package-input "hello")))))
+
+(test-eq "this-package-native-input, exists"
+ hello
+ (package-arguments
+ (dummy-package "a"
+ (native-inputs `(("hello" ,hello)))
+ (arguments (this-package-native-input "hello")))))
+
+(test-eq "this-package-native-input, does not exists"
+ #f
+ (package-arguments
+ (dummy-package "a"
+ (arguments (this-package-native-input "hello")))))
+
(test-end "packages")
;;; Local Variables: