[bug#43913] [PATCH 3/4] gnu: Add aws-c-event-stream.

[Greg Hogan <code@greghogan.com>]

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From f159d18e8444e4026a0b0ac16fcc7b6896ca96ba Mon Sep 17 00:00:00 2001
From: Greg Hogan <code@greghogan.com>
Date: Sat, 10 Oct 2020 17:47:45 +0000
Subject: [PATCH 3/4] gnu: Add aws-c-event-stream.

* gnu/packages/c.scm (aws-c-event-stream): New variable.
---
 gnu/local.mk                                  |  1 +
 gnu/packages/c.scm                            | 25 +++++++++++++++++++
 ...-event-stream-read-cmake-prefix-path.patch | 13 ++++++++++
 3 files changed, 39 insertions(+)
 create mode 100644
gnu/packages/patches/aws-c-event-stream-read-cmake-prefix-path.patch

diff --git a/gnu/local.mk b/gnu/local.mk
index 87e832d0c7..223c6346a9 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -813,6 +813,7 @@ dist_patch_DATA = \
   %D%/packages/patches/avogadro-python-eigen-lib.patch \
   %D%/packages/patches/avidemux-install-to-lib.patch \
   %D%/packages/patches/awesome-reproducible-png.patch \
+  %D%/packages/patches/aws-c-event-stream-read-cmake-prefix-path.patch  \
   %D%/packages/patches/aws-checksums-read-cmake-prefix-path.patch \
   %D%/packages/patches/azr3.patch \
   %D%/packages/patches/bash-reproducible-linux-pgrp-pipe.patch \
diff --git a/gnu/packages/c.scm b/gnu/packages/c.scm
index a30e589753..e4e859b098 100644
--- a/gnu/packages/c.scm
+++ b/gnu/packages/c.scm
@@ -520,3 +520,28 @@ handling for the AWS SDK for C.")
 efficient software implementations.")
     (home-page "https://github.com/awslabs/aws-checksums")
     (license license:asl2.0)))
+
+(define-public aws-c-event-stream
+  (package
+    (name "aws-c-event-stream")
+    (version "0.1.6")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url (string-append "https://github.com/awslabs/"
name))
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "1vl9ainc4klv0g9gk1iv4833bsllni6jxn6mwb0fnv2dnlz7zv9q"))
+              (patches (search-patches
"aws-c-event-stream-read-cmake-prefix-path.patch"))))
+    (build-system cmake-build-system)
+    (propagated-inputs
+     `(("aws-c-common" ,aws-c-common)))
+    (inputs
+     `(("aws-checksums" ,aws-checksums)))
+    (synopsis "Eventstream package for AWS SDK for C")
+    (description
+     "C99 implementation of the AWS EventStream content-type.")
+    (home-page "https://github.com/awslabs/aws-c-event-stream")
+    (license license:asl2.0)))
diff --git
a/gnu/packages/patches/aws-c-event-stream-read-cmake-prefix-path.patch
b/gnu/packages/patches/aws-c-event-stream-read-cmake-prefix-path.patch
new file mode 100644
index 0000000000..79655a910b
--- /dev/null
+++ b/gnu/packages/patches/aws-c-event-stream-read-cmake-prefix-path.patch
@@ -0,0 +1,13 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -3,6 +3,10 @@
+ cmake_minimum_required (VERSION 3.1)
+ project (aws-c-event-stream C)
+
++if (DEFINED ENV{CMAKE_PREFIX_PATH})
++    set(CMAKE_PREFIX_PATH $ENV{CMAKE_PREFIX_PATH})
++endif()
++
+ if (DEFINED CMAKE_PREFIX_PATH)
+     file(TO_CMAKE_PATH "${CMAKE_PREFIX_PATH}" CMAKE_PREFIX_PATH)
+ endif()
-- 
2.28.0

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