Xargo error: can't find specification for target

[roblabla]

After updating my rust toolchain to latest nightly, running xargo build -v --target=aarch64-nintendo-horizon-newlib gives errors out with Error loading target specification: Could not find specification for target "aarch64-nintendo-horizon-newlib". Full log can be found in this gist

Xargo version is 0.3.10.

So after ensuring it didn't happen on my old toolchain, I tried to cut down which nightly version broke it, and it seems to be nightly-2017-12-25. On nightly-2017-12-24, everything works fine, on nightly-2017-12-25, I get the error above.

[roblabla]

I suppose this is related to this commit: f5349aa. However, given I'm running version 0.3.10, maybe that fix is not enough ?

[roblabla]

My bad. This is a duplicate of #186 and rust-lang/cargo#4905.

[roblabla]

Actually reopening. I think the documentation/readme should be fixed to mention that people should set RUST_TARGET_PATH=`pwd`

[japaric]

that people should set RUST_TARGET_PATH=pwd

That's a Cargo breakage. Older Cargos don't have that problem. You are free to send a pull request to update the documentation.