ambrevar pushed a commit to branch master
in repository guix.
commit 003a714e7e1f458b84e60b7480149a59b034312c
Author: Pierre Neidhardt <m...@ambrevar.xyz>
Date: Mon Oct 7 13:48:52 2019 +0200
gnu: Add global-vars.
* gnu/packages/lisp.scm (cl-global-vars, ecl-global-vars, sbcl-global-vars):
New variables.
---
gnu/packages/lisp.scm | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/gnu/packages/lisp.scm b/gnu/packages/lisp.scm
index debe568..88261d5 100644
--- a/gnu/packages/lisp.scm
+++ b/gnu/packages/lisp.scm
@@ -7557,3 +7557,40 @@ trees to dispatch on string equality.")
(define-public ecl-string-case
(sbcl-package->ecl-package sbcl-string-case))
+
+(define-public sbcl-global-vars
+ (let ((commit "c749f32c9b606a1457daa47d59630708ac0c266e")
+ (revision "0"))
+ (package
+ (name "sbcl-global-vars")
+ (version (git-version "1.0.0" revision commit))
+ (home-page "https://github.com/lmj/global-vars";)
+ (source
+ (origin
+ (method git-fetch)
+ (uri (git-reference
+ (url home-page)
+ (commit commit)))
+ (file-name (git-file-name name version))
+ (sha256
+ (base32
+ "06m3xc8l3pgsapl8fvsi9wf6y46zs75cp9zn7zh6dc65v4s5wz3d"))))
+ (build-system asdf-build-system/sbcl)
+ (synopsis "Efficient global variables in Common Lisp")
+ (description
+ "In Common Lisp, a special variable that is never dynamically bound
+typically serves as a stand-in for a global variable. The @code{global-vars}
+library provides true global variables that are implemented by some compilers.
+An attempt to rebind a global variable properly results in a compiler error.
+That is, a global variable cannot be dynamically bound.
+
+Global variables therefore allow us to communicate an intended usage that
+differs from special variables. Global variables are also more efficient than
+special variables, especially in the presence of threads.")
+ (license license:expat))))
+
+(define-public cl-global-vars
+ (sbcl-package->cl-source-package sbcl-global-vars))
+
+(define-public ecl-global-vars
+ (sbcl-package->ecl-package sbcl-global-vars))
