notmuch: move gmime==3 constraint into the package

Using a top-level/all-packages.nix override to select the version is
confusing, and circumvents user overlays.

pkgs/applications/networking/mailreaders/notmuch/default.nix

@@ -1,6 +1,6 @@
 { fetchurl, lib, stdenv
 , pkg-config, gnupg
-, xapian, gmime, talloc, zlib
+, xapian, gmime3, talloc, zlib
 , doxygen, perl, texinfo
 , notmuch
 , pythonPackages
@@ -32,7 +32,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     gnupg                     # undefined dependencies
-    xapian gmime talloc zlib  # dependencies described in INSTALL
+    xapian gmime3 talloc zlib  # dependencies described in INSTALL
     perl
     pythonPackages.python
   ] ++ lib.optional withRuby ruby;
@@ -81,7 +81,7 @@ stdenv.mkDerivation rec {
     ln -s ${test-database} test/test-databases/database-v1.tar.xz
   '';
 
-  doCheck = !stdenv.hostPlatform.isDarwin && (lib.versionAtLeast gmime.version "3.0.3");
+  doCheck = !stdenv.hostPlatform.isDarwin && (lib.versionAtLeast gmime3.version "3.0.3");
   checkTarget = "test";
   nativeCheckInputs = [
     which dtach openssl bash

pkgs/top-level/all-packages.nix

@@ -32601,7 +32601,6 @@ with pkgs;
   notepadqq = libsForQt5.callPackage ../applications/editors/notepadqq { };
 
   notmuch = callPackage ../applications/networking/mailreaders/notmuch {
-    gmime = gmime3;
     pythonPackages = python3Packages;
   };