uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/python-modules/blspy/dont_fetch_dependencies.patch

@@ -0,0 +1,64 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 6922167..23d8da6 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -31,29 +31,18 @@ set(CMAKE_MODULE_PATH
+ include(FetchContent)
+ 
+ FetchContent_Declare(Sodium
+-  GIT_REPOSITORY https://github.com/AmineKhaldi/libsodium-cmake.git
+-  # Latest commit at the moment this was added here
+-  # Anchored to libsodium v1.0.18
+-  GIT_TAG f73a3fe1afdc4e37ac5fe0ddd401bf521f6bba65
++  URL @sodium_src@
+ )
+ set(SODIUM_PCH "on" CACHE STRING "")
+ set(SODIUM_DISABLE_TESTS "on" CACHE STRING "")
+ set(SODIUM_CHIA_MINIMAL "on" CACHE STRING "")
+ FetchContent_MakeAvailable(Sodium)
+ 
+-if (DEFINED ENV{RELIC_MAIN})
+-  set(RELIC_GIT_TAG "origin/main")
+-else ()
+-  # This is currently anchored to upstream aecdcae7956f542fbee2392c1f0feb0a8ac41dc5
+-  set(RELIC_GIT_TAG "1d98e5abf3ca5b14fd729bd5bcced88ea70ecfd7")
+-endif ()
+-
+ message(STATUS "Relic will be built from: ${RELIC_GIT_TAG}")
+ 
+ FetchContent_Declare(
+   relic
+-  GIT_REPOSITORY https://github.com/Chia-Network/relic.git
+-  GIT_TAG ${RELIC_GIT_TAG}
++  SOURCE_DIR @relic_src@
+ )
+ 
+ # Relic related options
+diff --git a/python-bindings/CMakeLists.txt b/python-bindings/CMakeLists.txt
+index 5a8c381..d9aa940 100644
+--- a/python-bindings/CMakeLists.txt
++++ b/python-bindings/CMakeLists.txt
+@@ -1,8 +1,7 @@
+ 
+ FetchContent_Declare(
+   pybind11
+-  GIT_REPOSITORY https://github.com/pybind/pybind11.git
+-  GIT_TAG        v2.6.2
++  SOURCE_DIR @pybind11_src@
+ )
+ FetchContent_MakeAvailable(pybind11 relic)
+ 
+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
+index 449164a..15a955e 100644
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -37,8 +37,7 @@ install(FILES $<TARGET_FILE:bls> DESTINATION lib)
+ if(BUILD_BLS_TESTS)
+   FetchContent_Declare(
+     Catch2
+-    GIT_REPOSITORY https://github.com/catchorg/Catch2.git
+-    GIT_TAG        v2.13.7
++    URL @catch2_src@
+   )
+   FetchContent_MakeAvailable(Catch2)
+   add_executable(runtest test.cpp)