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03/16: gnu: Add sbcl-introspect-environment.

From: guix-commits
Subject: 03/16: gnu: Add sbcl-introspect-environment.
Date: Thu, 4 Jul 2019 13:28:10 -0400 (EDT)

ambrevar pushed a commit to branch master
in repository guix.

commit f4a7653e44091350ece1bcbda6dfb0bef28a5786
Author: Pierre Neidhardt <address@hidden>
Date:   Thu Jul 4 19:18:43 2019 +0200

    gnu: Add sbcl-introspect-environment.
    * gnu/packages/lisp.scm (sbcl-introspect-environment): New variable.
 gnu/packages/lisp.scm | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/gnu/packages/lisp.scm b/gnu/packages/lisp.scm
index 8c3a7cb..de4a55b 100644
--- a/gnu/packages/lisp.scm
+++ b/gnu/packages/lisp.scm
@@ -6150,3 +6150,44 @@ This library offers macros to deal with symbols from any 
 Edition\" (@url{})
 and it exports symbols from implementation-specific packages.")
       (license license:llgpl))))
+(define-public sbcl-introspect-environment
+  (let ((commit "fff42f8f8fd0d99db5ad6c5812e53de7d660020b")
+        (revision "1"))
+    (package
+      (name "sbcl-introspect-environment")
+      (build-system asdf-build-system/sbcl)
+      (version (git-version "0.1" revision commit))
+      (home-page "";)
+      (source
+       (origin
+         (method git-fetch)
+         (uri (git-reference
+               (url home-page)
+               (commit commit)))
+         (file-name (git-file-name name version))
+         (sha256
+          (base32
+           "1i305n0wfmpac63ni4i3vixnnkl8daw5ncxy0k3dv92krgx6qzhp"))))
+      (native-inputs
+       `(("fiveam" ,sbcl-fiveam)))
+      (synopsis "Common Lisp environment introspection portability layer")
+      (description "This library is a small interface to portable but
+nonstandard introspection of Common Lisp environments.  It is intended to
+allow a bit more compile-time introspection of environments in Common Lisp.
+Quite a bit of information is available at the time a macro or compiler-macro
+runs; inlining info, type declarations, that sort of thing.  This information
+is all standard - any Common Lisp program can @code{(declare (integer x))} and
+This info ought to be accessible through the standard @code{&environment}
+parameters, but it is not.  Several implementations keep the information for
+their own purposes but do not make it available to user programs, because
+there is no standard mechanism to do so.
+This library uses implementation-specific hooks to make information available
+to users.  This is currently supported on SBCL, CCL, and CMUCL.  Other
+implementations have implementations of the functions that do as much as they
+can and/or provide reasonable defaults.")
+      (license license:wtfpl2))))

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