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Changes in the structure of buildGo.external meant that the package
layout for the protobuf library is now slightly different.
`proto` has been amended to work with the new structure. Callers of
buildGo.proto do not need to be updated (i.e. the example still
works).
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Adds an alternative implementation of a builder for external packages
which traverses packages and builds up an attribute set tree out of
their structure.
Currently this is not functional because there is no useable method of
specifying dependencies within that package set.
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This makes it possible to override arguments to the Go builders
downstream in the style of `overrideAttrs` from standard nixpkgs
derivations.
For example, given a Nix value `foo` that builds a binary called `foo`
the name of this binary could be changed and a new dependency on
`somelib` added like so:
foo.overrideGo(old: {
name = "bar";
deps = old.deps ++ [ somelib ];
})
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Introduces buildGo.grpc which is like buildGo.proto, but adds
dependencies on the gRPC libraries.
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Moves the Protobuf & gRPC dependencies to a separate file which uses
buildGo.external to build the dependencies.
The versions are pinned at master of 2019-11-26.
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Adds two new parameters to buildGo.external:
* `srcOnly` toggles whether the created derivation should contain only
the source code, or the built package.
This is useful in situations where some sub-packages of a larger
package are needed and the build should be deferred to the package
depending on them.
It defaults to false, meaning that external packages are built by
default.
* `targets` controls which "sub-packages" of the target package are
built. It defaults to building all sub-packages.
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Adds a buildGo.external function that can build packages following the
default go-tool package layout. Dependencies work the same way as they
do for other buildGo-packages, but instead of being passed straight to
the compiler a fake GOPATH is assembled using a symlink forest.
External currently supports very few direct configuration options and
was primarily created to build the protobuf packages, but it is also
useful for including external dependencies in buildGo-native projects.
The previous complex build logic for the protobuf package has been
replaced with a call to `external`.
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This lets users define an attribute set with link time options.
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Adds a 'buildGo.proto' function which takes a single .proto file as
its source and generates a corresponding Go library which can then be
imported.
'proto' takes these arguments (Yants-style type definition):
struct "protoArgs" {
# required:
name = string;
proto = path;
# optional:
extraDeps = list goLib; # defaults to [ ]
protocFlags = option string;
}
Note that proto libraries will automatically have dependencies for the
required protobuf Go libraries added to them.
gRPC is not (yet) supported.
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