diff --git a/gnu/packages/base.scm b/gnu/packages/base.scm
index c8fd8624af..8190a38ed4 100644
--- a/gnu/packages/base.scm
+++ b/gnu/packages/base.scm
@@ -523,11 +523,15 @@ (define-public glibc/linux
    ;; archive can be generated by checking out the commit ID and running:
    ;; git archive --prefix=$(git describe)/ HEAD | xz -9 > $(git describe).tar.xz
    ;; See <https://bugs.gnu.org/29406> for details.
-   (version "2.26-91-gaaa2eb83b8")
+   ;;
+   ;; Note: Always use a dot after the minor version since various places rely
+   ;; on "version-major+minor" to determine where locales are found.
+   (version "2.26.91-gaaa2eb83b8")
    (source (origin
             (method url-fetch)
             (uri (string-append "https://alpha.gnu.org/gnu/guix/mirror/"
-                                "glibc-" version ".tar.xz"))
+                                "glibc-" (version-major+minor version) "-"
+                                (caddr (string-split version #\.)) ".tar.xz"))
             (sha256
              (base32
               "1zwz6d0x3ndd0hgqp17fx71miyjvn4dgkl1nzhaz3mbcqxzrprhk"))
@@ -585,7 +589,7 @@ (define-public glibc/linux
             ;; `--localedir' is not honored, so work around it.
             ;; See <http://sourceware.org/ml/libc-alpha/2013-03/msg00093.html>.
             (string-append "libc_cv_complocaledir=/run/current-system/locale/"
-                           ,version)
+                           ,(version-major+minor version))
 
             (string-append "--with-headers="
                            (assoc-ref ,(if (%current-target-system)
@@ -955,7 +959,8 @@ (define-public glibc-locales
                    (list (string-append "libc_cv_complocaledir="
                                         (assoc-ref %outputs "out")
                                         "/lib/locale/"
-                                        ,(package-version glibc))))))))))
+                                        ,(version-major+minor
+                                          (package-version glibc)))))))))))
 
 (define-public glibc-utf8-locales
   (package
@@ -973,7 +978,7 @@ (define-public glibc-utf8-locales
                           (gzip      (assoc-ref %build-inputs "gzip"))
                           (out       (assoc-ref %outputs "out"))
                           (localedir (string-append out "/lib/locale/"
-                                                    ,version)))
+                                                    ,(version-major+minor version))))
                      ;; 'localedef' needs 'gzip'.
                      (setenv "PATH" (string-append libc "/bin:" gzip "/bin"))
 
diff --git a/guix/packages.scm b/guix/packages.scm
index f619d9b370..35f9b685a3 100644
--- a/guix/packages.scm
+++ b/guix/packages.scm
@@ -538,7 +538,8 @@ (define (first-file directory)
               (setenv "LOCPATH"
                       (string-append #+locales "/lib/locale/"
                                      #+(and locales
-                                            (package-version locales))))
+                                            (version-major+minor
+                                             (package-version locales)))))
               (setlocale LC_ALL "en_US.utf8"))
 
             (setenv "PATH" (string-append #+xz "/bin" ":"
diff --git a/guix/profiles.scm b/guix/profiles.scm
index 0eb99f40de..51c330b323 100644
--- a/guix/profiles.scm
+++ b/guix/profiles.scm
@@ -812,7 +812,8 @@ (define (dump file port)
           ;; install a UTF-8 locale.
           (setenv "LOCPATH"
                   (string-append #+glibc-utf8-locales "/lib/locale/"
-                                 #+(package-version glibc-utf8-locales)))
+                                 #+(version-major+minor
+                                    (package-version glibc-utf8-locales))))
           (setlocale LC_ALL "en_US.utf8")
 
           (match (append-map ca-files '#$(manifest-inputs manifest))
@@ -1256,7 +1257,8 @@ (define set-utf8-locale
       #~(begin
           (setenv "LOCPATH"
                   #$(file-append glibc-utf8-locales "/lib/locale/"
-                                 (package-version glibc-utf8-locales)))
+                                 (version-major+minor
+                                  (package-version glibc-utf8-locales))))
           (setlocale LC_ALL "en_US.utf8")))
 
     (define builder