Features activating external crates are supposed to have same name as
those crates. However we depend on same feature in other crates so we
need a separate feature. After MSRV bump it is possible to rename the
crates and features so we can now fix this inconsistency.
Sadly, derive can't see that the crate was renamed so all derives must
be told to use the other one.
We currently build the docs as a separate CI job, we can however just do
it as part of the `Tests` job using the nightly toolchain.
Conditionally build the docs based on a `DO_DOCS` env var.
Note, uses `--cfg docsrs` so can only be built run with nightly toolchain.
Based on the original work by Justin Moon.
*MSRV unchanged from 1.29.0.*
When `std` is off, `no-std` must be on, and we use the [`alloc`](https://doc.rust-lang.org/alloc/) and core2 crates. The `alloc` crate requires the user define a global allocator.
* Import from `core` and `alloc` instead of `std`
* `alloc` only used if `no-std` is on
* Create `std` feature
* Create `no-std` feature which adds a core2 dependency to polyfill `std::io` features. This is an experimental feature and should be
used with caution.
* CI runs tests `no-std`
* MSRV for `no-std` is 1.51 or so
By exposing this, we can use the 'rand' dependency of secp256k1
in a project that only depends on rust-bitcoin without having to
add a separate dependency in order to activate the feature flag.
Martin Habovstiak
Tobin C. Harding
KaFai Choi
Devrandom
Andrew Poelstra
Sebastian Geisler
Steven Roose
Thomas Eizinger
Elichai Turkel
Carl Dong
Carl Dong