gnu: emacs-nov-el: Use version tag instead of commit.

* gnu/packages/emacs-xyz.scm (emacs-nov-el): Remove let binding and associated
comment; correct indentation.
[source]: Use version tag as commit identifier now that upstream has restored
this information.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

gnu/packages/emacs-xyz.scm

@@ -12550,39 +12550,36 @@ (define-public emacs-esxml
     (license license:gpl3+)))
 
 (define-public emacs-nov-el
-  ;; Upstream does not tag releases.  Specify raw commit hash matching the
+  (package
-  ;; release.
+    (name "emacs-nov-el")
-  (let ((commit "ea0c835c1b5e6e70293f4bd64e9c89bdc42f8596"))
+    (version "0.3.0")
-    (package
+    (source
-      (name "emacs-nov-el")
+     (origin
-      (version "0.3.0")
+       (method git-fetch)
-      (source
+       (uri (git-reference
-       (origin
+             (url "https://depp.brause.cc/nov.el.git")
-         (method git-fetch)
+             (commit version)))
-         (uri (git-reference
+       (file-name (git-file-name name version))
-               (url "https://depp.brause.cc/nov.el.git")
+       (sha256
-               (commit commit)))
+        (base32 "04phmm14ywgicjsl2bsg6w9rapd71vdkxdp5wp0brj6px27y85jz"))))
-         (file-name (git-file-name name version))
+    (build-system emacs-build-system)
-         (sha256
+    (arguments
-          (base32 "04phmm14ywgicjsl2bsg6w9rapd71vdkxdp5wp0brj6px27y85jz"))))
+     `(#:phases
-      (build-system emacs-build-system)
+       (modify-phases %standard-phases
-      (arguments
+         (add-after 'unpack 'embed-path-to-unzip
-       `(#:phases
+           (lambda _
-         (modify-phases %standard-phases
+             (substitute* "nov.el"
-           (add-after 'unpack 'embed-path-to-unzip
+               (("\\(executable-find \"unzip\"\\)")
-             (lambda _
+                (string-append "\"" (which "unzip") "\"")))
-               (substitute* "nov.el"
+             #t)))))
-                 (("\\(executable-find \"unzip\"\\)")
+    (propagated-inputs
-                  (string-append "\"" (which "unzip") "\"")))
+     `(("emacs-dash" ,emacs-dash)
-               #t)))))
+       ("emacs-esxml" ,emacs-esxml)))
-      (propagated-inputs
+    (inputs
-       `(("emacs-dash" ,emacs-dash)
+     `(("unzip" ,unzip)))
-         ("emacs-esxml" ,emacs-esxml)))
+    (home-page "https://depp.brause.cc/nov.el/")
-      (inputs
+    (synopsis "Major mode for reading EPUBs in Emacs")
-       `(("unzip" ,unzip)))
+    (description "@code{nov.el} provides a major mode for reading EPUB
-      (home-page "https://depp.brause.cc/nov.el/")
-      (synopsis "Major mode for reading EPUBs in Emacs")
-      (description "@code{nov.el} provides a major mode for reading EPUB
 documents.
 
 Features:
@@ -12599,7 +12596,7 @@ (define-public emacs-nov-el
 @item Image rescaling
 @end itemize
 ")
-      (license license:gpl3+))))
+    (license license:gpl3+)))
 
 (define-public epipe
   (package