prepare for publishing to crates.io (#1335)

Cargo.toml

@@ -9,16 +9,9 @@ repository = "https://github.com/mthom/scryer-prolog"
 license = "BSD-3-Clause"
 keywords = ["prolog", "prolog-interpreter", "prolog-system"]
 categories = ["command-line-utilities"]
-build = "build.rs"
+build = "build/main.rs"
 rust-version = "1.57"
 
-[workspace]
-members = ["crates/num-rug-adapter",
-           "crates/static-string-indexing",
-           "crates/instructions-template",
-           "crates/to-syn-value",
-           "crates/to-syn-value_derive"]
-
 [features]
 num = ["num-rug-adapter"]
 # no default features to make num tests work
@@ -28,9 +21,14 @@ default = ["rug"]
 
 [build-dependencies]
 indexmap = "1.0.2"
-static-string-indexing = { path = "./crates/static-string-indexing" }
-instructions-template = { path = "./crates/instructions-template" }
-proc-macro2 = "*"
+proc-macro2 = "1.0.36"
+quote = "1.0.15"
+strum = "0.23"
+strum_macros = "0.23"
+syn = { version = "1.0.88", features = ['full', 'visit', 'extra-traits'] }
+to-syn-value = "0.1.0"
+to-syn-value_derive = "0.1.0"
+walkdir = "2"
 
 [dependencies]
 cpu-time = "1.0.0"
@@ -44,9 +42,9 @@ indexmap = "1.0.2"
 lazy_static = "1.4.0"
 lexical = "5.2.2"
 libc = "0.2.62"
-modular-bitfield = { git = "https://github.com/mthom/modular-bitfield" } # modular-bitfield = "0.11.2"
+modular-bitfield = "0.11.2"
 nix = "0.15.0"
-num-rug-adapter = { optional = true, path = "./crates/num-rug-adapter" }
+num-rug-adapter = { version = "0.1.6", optional = true }
 ordered-float = "2.1.1"
 phf = { version = "0.9",  features = ["macros"] }
 ref_thread_local = "0.0.0"
@@ -62,7 +60,7 @@ chrono = "0.4.11"
 select = "0.4.3"
 roxmltree = "0.11.0"
 base64 = "0.12.3"
-smallvec = "*"
+smallvec = "1.8.0"
 sodiumoxide = "0.2.6"
 static_assertions = "1.1.0"
 slice-deque = "0.3.0"
@@ -72,5 +70,9 @@ assert_cmd = "1.0.3"
 predicates-core = "1.0.2"
 serial_test = "0.5.1"
 
+[patch.crates-io]
+modular-bitfield = { git = "https://github.com/mthom/modular-bitfield" }
+num-rug-adapter = { git = "https://github.com/mthom/num-rug-adapter" }
+
 [profile.release]
 debug = true