[blockchain] add the Esplora backend

diff --git a/Cargo.toml b/Cargo.toml
index a3aa967e459241b8d7a6f7b72adc4920b3873b1f..2ef3a5293d5eabd32b551c2e851b32b983aab3a3 100644 (file)
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,12 +14,14 @@ base64 = "^0.11"
 # Optional dependencies
 sled = { version = "0.31.0", optional = true }
 electrum-client = { version = "0.1.0-beta.5", optional = true }
+reqwest = { version = "0.10", optional = true, features = ["blocking", "json"] }
 
 [features]
 minimal = []
 compiler = ["miniscript/compiler"]
 default = ["key-value-db", "electrum"]
 electrum = ["electrum-client"]
+esplora = ["reqwest"]
 key-value-db = ["sled"]
 
 [dev-dependencies]