In order to build Haskell packages with proto-lens
, the Google protobuf
compiler (which is a standalone binary named protoc
) needs to be installed
somewhere on your $PATH
. You can get it by downloading the corresponding
file for your system from https://github.com/google/protobuf/releases. (The
corresponding file will be named something like protoc-*-.zip
.)
Here are some OS-specific options for installing the binary. These instructions
also install basic .proto
files like wrappers.proto
, any.proto
and
descriptor.proto
. (Those files aren't needed by proto-lens
itself,
but they may be useful for other language bindings/plugins.)
-
If you have Homebrew (which you can get from https://brew.sh), just run:
brew install protobuf
If you see any error messages, run
brew doctor
, follow any recommended fixes, and try again. If it still fails, try instead:brew upgrade protobuf
-
Alternately, run the following commands:
PROTOC_ZIP=protoc-28.0-osx-x86_64.zip curl -OL https://github.com/protocolbuffers/protobuf/releases/download/v28.0/$PROTOC_ZIP sudo unzip -o $PROTOC_ZIP -d /usr/local bin/protoc sudo unzip -o $PROTOC_ZIP -d /usr/local 'include/*' rm -f $PROTOC_ZIP
-
Run the following commands:
PROTOC_ZIP=protoc-28.0-linux-x86_64.zip curl -OL https://github.com/protocolbuffers/protobuf/releases/download/v28.0/$PROTOC_ZIP sudo unzip -o $PROTOC_ZIP -d /usr/local bin/protoc sudo unzip -o $PROTOC_ZIP -d /usr/local 'include/*' rm -f $PROTOC_ZIP
-
Alternately, manually download and install
protoc
from here.