gnu: openexr: Fix build.

Two issues are fixed with this commit.  First, openexr would fail to build on
i686-linux due to a test which checks for SSE2.  Secondly, dependents could
fail to find openexr as it now has libdeflate in the Requires.private of
OpenEXR.pc.

* gnu/packages/graphics.scm (openexr)[arguments]: Enable SSE2 for x86_64-linux
and i686-linux in configure-flags.
[inputs]: Remove zlib (no longer used).  Move libdeflate from here ...
[propagated-inputs]: ... to here.

Change-Id: Ib2e6669036033e262447ba4b1b98c20c7db13bf1

gnu/packages/graphics.scm

@@ -28,7 +28,7 @@
 ;;; Copyright © 2021 Ekaitz Zarraga <ekaitz@elenq.tech>
 ;;; Copyright © 2021, 2022 Vinicius Monego <monego@posteo.net>
 ;;; Copyright © 2022 Michael Rohleder <mike@rohleder.de>
-;;; Copyright © 2022, 2023 John Kehayias <john.kehayias@protonmail.com>
+;;; Copyright © 2022, 2023, 2024 John Kehayias <john.kehayias@protonmail.com>
 ;;; Copyright © 2022 Zheng Junjie <873216071@qq.com>
 ;;; Copyright © 2022 Tobias Kortkamp <tobias.kortkamp@gmail.com>
 ;;; Copyright © 2022 Paul A. Patience <paul@apatience.com>
@@ -142,7 +142,8 @@
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix packages)
   #:use-module (guix deprecation)
-  #:use-module (guix utils))
+  #:use-module (guix utils)
+  #:use-module (ice-9 match))
 
 (define-public mmm
   (package
@@ -1204,7 +1205,16 @@ graphics.")
                 "00s1a05kggk71vfbnsvykyjc2j7y6yyzgl63sy4yiddshz2k2mcr"))))
     (build-system cmake-build-system)
     (arguments
-     (list #:phases
+     (list #:configure-flags
+           #~(list #$@(match (%current-system)
+                        ;; A test explicitly checks for SSE2 (would fail on
+                        ;; i686-linux), so make sure it is enabled for both C
+                        ;; and CPP.
+                        ((or "x86_64-linux" "i686-linux")
+                         '("-DCMAKE_CXX_FLAGS=-mfpmath=sse -msse2"
+                           "-DCMAKE_C_FLAGS=-mfpmath=sse -msse2"))
+                        (_ '())))
+           #:phases
            #~(modify-phases %standard-phases
                (add-after 'unpack 'patch-test-directory
                  (lambda _
@@ -1236,7 +1246,10 @@ graphics.")
                                 "")
                                (("TEST \\(testOptimizedInterleavePatterns, \"basic\"\\);")
                                 "")))))))))
-    (inputs (list imath libdeflate zlib))
+    (inputs (list imath))
+    (propagated-inputs
+     ;; Marked as Requires.private in OpenEXR.pc.
+     (list libdeflate))
     (home-page "https://www.openexr.com/")
     (synopsis "High-dynamic-range file format library")
     (description