gnu: protobuf: Update to 3.10.0.

* gnu/packages/protobuf.scm (protobuf, python-protobuf): Update to 3.10.0.
(protobuf-next, python-protobuf-next): Rename to ....
(protobuf-3.6, python-protobuf-3.6): ... this.
(protobuf-3.5): New public variable.
* gnu/packages/machine-learning.scm (grpc)[native-inputs]: Change from
PROTOBUF-NEXT to PROTOBUF.
(tensorflow)[native-inputs, propagated-inputs]: Adjust for renamed PROTOBUF-NEXT.
* gnu/packages/robotics.scm (aseba)[inputs]: Change from PROTOBUF to PROTOBUF-3.5.
* gnu/packages/telephony.scm (mumble)[inputs]: Likewise.

gnu/packages/machine-learning.scm

@@ -1302,7 +1302,7 @@ (define-public grpc
        ("openssl" ,openssl)
        ("zlib" ,zlib)))
     (native-inputs
-     `(("protobuf" ,protobuf-next)
+     `(("protobuf" ,protobuf)
        ("python" ,python-wrapper)))
     (home-page "https://grpc.io")
     (synopsis "High performance universal RPC framework")
@@ -1607,8 +1607,8 @@ (define-public tensorflow
                #t))))))
     (native-inputs
      `(("pkg-config" ,pkg-config)
-       ("protobuf:native" ,protobuf-next) ; protoc
-       ("protobuf:src" ,(package-source protobuf-next))
+       ("protobuf:native" ,protobuf-3.6) ; protoc
+       ("protobuf:src" ,(package-source protobuf-3.6))
        ("eigen:src" ,(package-source eigen-for-tensorflow))
        ;; install_pip_packages.sh wants setuptools 39.1.0 specifically.
        ("python-setuptools" ,python-setuptools-for-tensorflow)
@@ -1735,7 +1735,7 @@ (define-public tensorflow
        ("python-gast" ,python-gast)
        ("python-grpcio" ,python-grpcio)
        ("python-numpy" ,python-numpy)
-       ("python-protobuf" ,python-protobuf-next)
+       ("python-protobuf" ,python-protobuf-3.6)
        ("python-six" ,python-six)
        ("python-termcolo" ,python-termcolor)
        ("python-wheel" ,python-wheel)))
@@ -1751,7 +1751,7 @@ (define-public tensorflow
        ("jsoncpp" ,jsoncpp-for-tensorflow)
        ("snappy" ,snappy)
        ("sqlite" ,sqlite)
-       ("protobuf" ,protobuf-next)
+       ("protobuf" ,protobuf-3.6)
        ("python" ,python-wrapper)
        ("zlib" ,zlib)))
     (home-page "https://tensorflow.org")

gnu/packages/protobuf.scm

@@ -75,7 +75,7 @@ (define-public fstrm
 (define-public protobuf
   (package
     (name "protobuf")
-    (version "3.5.1")
+    (version "3.10.0")
     (source (origin
               (method url-fetch)
               (uri (string-append "https://github.com/google/protobuf/releases/"
@@ -83,7 +83,7 @@ (define-public protobuf
                                   version ".tar.gz"))
               (sha256
                (base32
-                "14j0427ykjzrd9a66c2mpk0sjcccjlsx6q8ww6hzwb6sha3vm3f2"))))
+                "06xnqpsa79jrk3k55fsycnp7jac546299v7gdyx9yf4c5q81xfgz"))))
     (build-system gnu-build-system)
     (inputs `(("zlib" ,zlib)))
     (outputs (list "out"
@@ -112,9 +112,9 @@ (define-public protobuf
 internal RPC protocols and file formats.")
     (license license:bsd-3)))
 
-(define-public protobuf-next
-  (package (inherit protobuf)
-    (name "protobuf")
+;; Tensorflow requires version 3.6 specifically.
+(define-public protobuf-3.6
+  (package/inherit protobuf
     (version "3.6.1")
     (source (origin
               (method url-fetch)
@@ -125,6 +125,20 @@ (define-public protobuf-next
                (base32
                 "0a955bz59ihrb5wg7dwi12xajdi5pmz4bl0g147rbdwv393jwwxk"))))))
 
+;; The 3.5 series are the last versions that do not require C++ 11.
+(define-public protobuf-3.5
+  (package/inherit
+   protobuf
+   (version "3.5.1")
+   (source (origin
+              (method url-fetch)
+              (uri (string-append "https://github.com/google/protobuf/releases/"
+                                  "download/v" version "/protobuf-cpp-"
+                                  version ".tar.gz"))
+              (sha256
+               (base32
+                "14j0427ykjzrd9a66c2mpk0sjcccjlsx6q8ww6hzwb6sha3vm3f2"))))))
+
 ;; XXX Remove this old version when no other packages depend on it.
 (define-public protobuf-2
   (package (inherit protobuf)
@@ -189,14 +203,14 @@ (define-public protozero
 (define-public python-protobuf
   (package
     (name "python-protobuf")
-    (version "3.5.2")
+    (version "3.10.0")
     (source
      (origin
        (method url-fetch)
        (uri (pypi-uri "protobuf" version))
        (sha256
         (base32
-         "1q4b1m55w4gvcbzklbk8iylaii98n4in41k27d94w8ypbwlrm1q9"))))
+         "1zjq3qi0wgqi0fwxgqlgwvj9ri1m4kmnz3jnpd803lqc5k0vb0yv"))))
     (build-system python-build-system)
     (propagated-inputs
      `(("python-six" ,python-six)))
@@ -210,10 +224,11 @@ (define-public python-protobuf
 (define-public python2-protobuf
   (package-with-python2 python-protobuf))
 
-(define-public python-protobuf-next
-  (package (inherit python-protobuf)
+;; For tensorflow.
+(define-public python-protobuf-3.6
+  (package/inherit python-protobuf
     (name "python-protobuf")
-    (version (package-version protobuf-next) )
+    (version (package-version protobuf-3.6) )
     (source
      (origin
        (method url-fetch)

gnu/packages/robotics.scm

@@ -106,7 +106,7 @@ (define-public aseba
       (inputs
        `(("dashel" ,dashel)
          ("enki" ,enki)
-         ("protobuf" ,protobuf)                   ;for logging
+         ("protobuf" ,protobuf-3.5)               ;for logging
          ("qtbase" ,qtbase)
          ("qtsvg" ,qtsvg)
          ("qttools" ,qttools)              ;for libQt5Help, needed by "studio"

gnu/packages/telephony.scm

@@ -464,7 +464,7 @@ (define-public mumble
                          (find-files "release/plugins" "\\.so$"))))))))
     (inputs
      `(("avahi" ,avahi)
-       ("protobuf" ,protobuf)
+       ("protobuf" ,protobuf-3.5)
        ("openssl" ,openssl)
        ("libsndfile" ,libsndfile)
        ("boost" ,boost)