gnu: Update coq-autosubst to 1.8.

* gnu/packages/coq.scm (coq-autosubst): Update to 1.8.

Signed-off-by: Julien Lepiller <julien@lepiller.eu>
Change-Id: I36b226afd3ed043977c6188dcb6bdeaf2e402de8

gnu/packages/coq.scm

@@ -542,21 +542,17 @@ Coq proof assistant.")
     (license license:cecill-c)))
 
 (define-public coq-autosubst
-  ;; Latest commit on that branch, where work on supporting coq 8.6 and
-  ;; more recent versions of coq happen.
-  (let ((branch "coq86-devel")
-        (commit "fa6ef30664511ffa659cbcf3c962715cbee03572"))
   (package
     (name "coq-autosubst")
-      (version (git-version "1" branch commit))
+    (version "1.8")
     (source (origin
               (method git-fetch)
               (uri (git-reference
-                      (url "git://github.com/uds-psl/autosubst")
-                      (commit commit)))
+                    (url "https://github.com/coq-community/autosubst")
+                    (commit (string-append "v" version))))
               (file-name (git-file-name name version))
               (sha256
-                 (base32 "1cl0bp96bk6lplbl7n5c703vd3gvbs5mvf2qrf8q333kkqd7jqq4"))))
+               (base32 "0qk72r6cqxwhqqkl2kmryhw365w3l2016qii1q1sk3md7zq46jcz"))))
     (build-system gnu-build-system)
     (arguments
      `(#:tests? #f
@@ -581,7 +577,7 @@ usage of substitution lemmas unnecessary.  The tactic is based on our current
 work on a decision procedure for the equational theory of an extension of the
 sigma-calculus by Abadi et al.  The library is completely written in Coq and
 uses Ltac to synthesize the substitution operation.")
-      (license license:bsd-3))))
+    (license license:bsd-3)))
 
 (define-public coq-equations
   (package