how to build/run examples

[brennennen]

Howdy,

Sorry in advance if this is dumb or I missed documentation somewhere.

I can't get some of the examples to run. Most seem to run with cargo run --example {file_name} but some throw build errors. Specifically, any that use druid::im I can't seem to get working. The two I tried and that failed were tabs and widget_gallery,

This issue/comment on cargo seems to be related:
rust-lang/cargo#4663 (comment)

System:

• Windows10 19042
• rustc 1.48.0
• cargo 1.48.0

Steps to reproduce:

• git clone https://github.com/linebender/druid
• cargo run --example tabs
  • Cargo suggests adding the --features argument to build with im. If I add this, I then get another error stating --features doesn't do anything.

Output:

PS D:\repositories\druid> cargo run --example tabs
error: target `tabs` in package `druid` requires the features: `im`
Consider enabling them by passing, e.g., `--features="im"`
PS D:\repositories\druid> cargo run --features="im" --example tabs
error: --features is not allowed in the root of a virtual workspace
note: while this was previously accepted, it didn't actually do anything

[cmyr]

yea, to run features you need to be inside the druid directory; the root directory has multiple crates, and so when you use --features there it doesn't know who you're trying to pass features to.

[brennennen]

that works, thanks!