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diff --git a/.guix/modules/gn/packages/gn-auth.scm b/.guix/modules/gn/packages/gn-auth.scm
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+++ b/.guix/modules/gn/packages/gn-auth.scm
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+(define-module (gn gn-auth)
+  #:use-module (guix)
+  #:use-module (guix git-download)
+  #:use-module (guix build-system python)
+  #:use-module ((guix licenses) #:prefix license:)
+
+  #:use-module (git oid)
+  #:use-module (git tag)
+  #:use-module (git bindings)
+  #:use-module (git reference)
+  #:use-module (git repository)
+
+
+  ;; Packages from guix
+  #:use-module (gnu packages check)
+
+  #:use-module (gnu packages python-web)
+  #:use-module (gnu packages python-xyz)
+  #:use-module (gnu packages python-check)
+  #:use-module (gnu packages python-crypto)
+
+  #:use-module (gnu packages databases)
+
+
+  ;; Packages from guix-bioinformatics
+  #:use-module (gn packages python-web))
+
+(define %source-dir (dirname (dirname (dirname (current-filename)))))
+
+(define (get-commit)
+  "Retrieve the commit if the source directory is a repository."
+  (if (git-predicate %source-dir)
+      (begin (let ((commit #f))
+	       (libgit2-init!)
+	       (set! commit (oid->string
+			     (reference-target
+			      (repository-head (repository-open %source-dir)))))
+	       (libgit2-shutdown!)
+	       commit))
+      "NOTAREPOSITORY"))
+
+(define (list-last lst)
+  (let ((len (length lst)))
+    (if (> len 0)
+	(list-ref lst (- len 1)))))
+
+(define (process-version repo-head tag-vals)
+  (let ((version-prefix (list-last (string-split (car tag-vals) #\/)))
+	(repo-head-str (oid->string repo-head)))
+    (if (zero? (oid-cmp  repo-head
+			 (tag-target-id (cdr tag-vals))))
+	version-prefix
+	(string-append version-prefix "-" (substring repo-head-str 0 8)))))
+
+(define (get-latest-version)
+  "Get latest version tag from repository."
+  (let ((%repo #f)
+	(%tags (list))
+	(%repo-head #f))
+    (begin (libgit2-init!)
+	   (set! %repo (repository-open %source-dir))
+	   (set! %repo-head (reference-target (repository-head %repo)))
+	   (tag-foreach %repo
+			(lambda (tname tref)
+			  (set! %tags (list (cons tname (tag-lookup %repo tref))))
+			  0))
+	   (libgit2-shutdown!)
+	   (if (zero? (length %tags))
+	       (string-append "v0.0.0-" (substring (oid->string %repo-head) 0 8))
+	       (process-version
+		%repo-head
+		(list-last (sort-list %tags (lambda (item) (error item)))))))))
+
+(define vcs-file?
+  (or (git-predicate %source-dir)
+      (const #t)))
+
+(package
+ (name "genenetwork-auth")
+ (version (string-append (get-latest-version)
+			 "-git-"
+			 (substring (get-commit) 0 9)))
+ (source (local-file %source-dir "genenetwork-auth-checkout"
+		     #:recursive? #t
+		     #:select? vcs-file?))
+ (build-system python-build-system)
+ (arguments
+  (list
+   #:phases
+   #~(modify-phases %standard-phases
+	(replace 'check
+	  (lambda _ (invoke "pytest" "-k" "unit_test"))))))
+ ;; (inputs (list))
+ (native-inputs
+  (list python-mypy
+	python-pytest
+	python-pylint
+	python-hypothesis
+	python-pytest-mock
+        python-mypy-extensions))
+ (propagated-inputs
+  (list python-flask
+	python-redis
+	python-authlib
+	python-pymonad
+	yoyo-migrations
+	python-bcrypt ;; remove after removing all references
+	python-mysqlclient
+	python-argon2-cffi
+	python-email-validator))
+ (home-page "https://github.com/genenetwork/gn-auth")
+ (synopsis "Authentication and Authorisation server for GeneNetwork services.")
+ (description "Authentication and Authorisation server for GeneNetwork services.")
+ (license license:agpl3+))