In Go, it is common that some packages are versioned. So a program might look like this:
package main
import (
"github.com/go-gl/gl/v3.3-core/gl"
"github.com/go-gl/glfw/v3.2/glfw"
)
// ... do stuff
Sometimes, I might want to update the version of glfw. Lets imagine GLFW 3.3 bindings come to Go and I want to update from 3.2.
I might have multiple Go files in a project all using glfw. I don't want to go into each of them and update the version of the import by hand. Ideally I wouldn't be copying that long path around, either, and I could define it in one place per project.
- Maybe I could write a script to find+replace "github.com/go-gl/glfw/v3.2/glfw"
- Maybe I could template the file with Genny
- Maybe I could create a symlink inside the root Go path "glfw" -> "github.com/go-gl/glfw/v3.2/glfw", update it when changing version, and just use
import "glfw"- but this information then lives "outside" the project, so no-one cloning my project knows what version to use
- but this is a global change and I might have multiple projects which want to depend on different versions
Ideally I would be able to do something like this in each source file:
package main
import (
$gl
$glfw
)
And in some project-level dot file, something like:
gl=github.com/go-gl/gl/v3.3-core/gl
glfw=github.com/go-gl/glfw/v3.2/glfw
Or, a command-line argument attached to go build defining constants that could look something like:
go build -Dgl=github.com/go-gl/gl/v3.3-core/gl -Dglfw=github.com/go-gl/glfw/v3.2/glfw
How is everyone else handling this currently?
