fix leon & binstalk-downloader bug relating to features (#1153)

- ci: Check feat powerset of leon & binstalk-downloader in `ci.yml`
 - fix leon feature `cli`: Enable dep `miette` in feature `cli`
 - fix binstalk-downloader when default feature is disabled and no other
   tls related feature is enabled (breaking change due to replace of
   `tls::Version` with newtype `TLSVersion`).

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

crates/binstalk-downloader/src/remote/certificate.rs

@@ -1,13 +1,19 @@
+#[cfg(feature = "__tls")]
 use reqwest::tls;
 
 use super::Error;
 
 #[derive(Clone, Debug)]
-pub struct Certificate(pub(super) tls::Certificate);
+pub struct Certificate(#[cfg(feature = "__tls")] pub(super) tls::Certificate);
 
+#[cfg_attr(not(feature = "__tls"), allow(unused_variables))]
 impl Certificate {
     /// Create a Certificate from a binary DER encoded certificate
     pub fn from_der(der: impl AsRef<[u8]>) -> Result<Self, Error> {
+        #[cfg(not(feature = "__tls"))]
+        return Ok(Self());
+
+        #[cfg(feature = "__tls")]
         tls::Certificate::from_der(der.as_ref())
             .map(Self)
             .map_err(Error::from)
@@ -15,6 +21,10 @@ impl Certificate {
 
     /// Create a Certificate from a PEM encoded certificate
     pub fn from_pem(pem: impl AsRef<[u8]>) -> Result<Self, Error> {
+        #[cfg(not(feature = "__tls"))]
+        return Ok(Self());
+
+        #[cfg(feature = "__tls")]
         tls::Certificate::from_pem(pem.as_ref())
             .map(Self)
             .map_err(Error::from)

crates/binstalk-downloader/src/remote/tls_version.rs

@@ -0,0 +1,37 @@
+#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord)]
+enum Inner {
+    Tls1_2 = 0,
+    Tls1_3 = 1,
+}
+
+/// TLS version for [`crate::remote::Client`].
+#[derive(Debug, Copy, Clone, PartialEq, Eq, PartialOrd, Ord)]
+pub struct TLSVersion(Inner);
+
+impl TLSVersion {
+    pub const TLS_1_2: TLSVersion = TLSVersion(Inner::Tls1_2);
+    pub const TLS_1_3: TLSVersion = TLSVersion(Inner::Tls1_3);
+}
+
+#[cfg(feature = "__tls")]
+impl From<TLSVersion> for reqwest::tls::Version {
+    fn from(ver: TLSVersion) -> reqwest::tls::Version {
+        use reqwest::tls::Version;
+        use Inner::*;
+
+        match ver.0 {
+            Tls1_2 => Version::TLS_1_2,
+            Tls1_3 => Version::TLS_1_3,
+        }
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_tls_version_order() {
+        assert!(TLSVersion::TLS_1_2 < TLSVersion::TLS_1_3);
+    }
+}