diff --git a/cranelift/isle/Cargo.lock b/cranelift/isle/Cargo.lock
index 26a438a64e..63a6b3a949 100644
--- a/cranelift/isle/Cargo.lock
+++ b/cranelift/isle/Cargo.lock
@@ -70,17 +70,25 @@ dependencies = [
 [[package]]
 name = "isle"
 version = "0.1.0"
+dependencies = [
+ "log",
+]
+
+[[package]]
+name = "islec"
+version = "0.1.0"
 dependencies = [
  "clap",
  "env_logger",
+ "isle",
  "log",
 ]
 
 [[package]]
 name = "libc"
-version = "0.2.97"
+version = "0.2.101"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12b8adadd720df158f4d70dfe7ccc6adb0472d7c55ca83445f6a5ab3e36f8fb6"
+checksum = "3cb00336871be5ed2c8ed44b60ae9959dc5b9f08539422ed43f09e34ecaeba21"
 
 [[package]]
 name = "log"
diff --git a/cranelift/isle/Cargo.toml b/cranelift/isle/Cargo.toml
index 2d7da0ae6f..2f3fcbb680 100644
--- a/cranelift/isle/Cargo.toml
+++ b/cranelift/isle/Cargo.toml
@@ -1,11 +1,2 @@
-[package]
-name = "isle"
-version = "0.1.0"
-authors = ["Chris Fallin <chris@cfallin.org>"]
-edition = "2018"
-license = "Apache-2.0 WITH LLVM-exception"
-
-[dependencies]
-log = "0.4"
-env_logger = { version = "0.8", default-features = false }
-clap = "2.33"
+[workspace]
+members = [ "isle", "islec" ]
diff --git a/cranelift/isle/isle/Cargo.toml b/cranelift/isle/isle/Cargo.toml
new file mode 100644
index 0000000000..3fe78c9eb7
--- /dev/null
+++ b/cranelift/isle/isle/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "isle"
+version = "0.1.0"
+authors = ["Chris Fallin <chris@cfallin.org>"]
+edition = "2018"
+license = "Apache-2.0 WITH LLVM-exception"
+
+[dependencies]
+log = "0.4"
diff --git a/cranelift/isle/src/ast.rs b/cranelift/isle/isle/src/ast.rs
similarity index 100%
rename from cranelift/isle/src/ast.rs
rename to cranelift/isle/isle/src/ast.rs
diff --git a/cranelift/isle/src/codegen.rs b/cranelift/isle/isle/src/codegen.rs
similarity index 100%
rename from cranelift/isle/src/codegen.rs
rename to cranelift/isle/isle/src/codegen.rs
diff --git a/cranelift/isle/src/compile.rs b/cranelift/isle/isle/src/compile.rs
similarity index 100%
rename from cranelift/isle/src/compile.rs
rename to cranelift/isle/isle/src/compile.rs
diff --git a/cranelift/isle/src/error.rs b/cranelift/isle/isle/src/error.rs
similarity index 100%
rename from cranelift/isle/src/error.rs
rename to cranelift/isle/isle/src/error.rs
diff --git a/cranelift/isle/src/ir.rs b/cranelift/isle/isle/src/ir.rs
similarity index 100%
rename from cranelift/isle/src/ir.rs
rename to cranelift/isle/isle/src/ir.rs
diff --git a/cranelift/isle/src/lexer.rs b/cranelift/isle/isle/src/lexer.rs
similarity index 100%
rename from cranelift/isle/src/lexer.rs
rename to cranelift/isle/isle/src/lexer.rs
diff --git a/cranelift/isle/isle/src/lib.rs b/cranelift/isle/isle/src/lib.rs
new file mode 100644
index 0000000000..5d9dcb088a
--- /dev/null
+++ b/cranelift/isle/isle/src/lib.rs
@@ -0,0 +1,9 @@
+pub mod ast;
+pub mod codegen;
+pub mod compile;
+pub mod error;
+pub mod ir;
+pub mod lexer;
+pub mod parser;
+pub mod sema;
+
diff --git a/cranelift/isle/src/parser.rs b/cranelift/isle/isle/src/parser.rs
similarity index 100%
rename from cranelift/isle/src/parser.rs
rename to cranelift/isle/isle/src/parser.rs
diff --git a/cranelift/isle/src/sema.rs b/cranelift/isle/isle/src/sema.rs
similarity index 100%
rename from cranelift/isle/src/sema.rs
rename to cranelift/isle/isle/src/sema.rs
diff --git a/cranelift/isle/islec/Cargo.toml b/cranelift/isle/islec/Cargo.toml
new file mode 100644
index 0000000000..4454234640
--- /dev/null
+++ b/cranelift/isle/islec/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "islec"
+version = "0.1.0"
+authors = ["Chris Fallin <chris@cfallin.org>"]
+edition = "2018"
+license = "Apache-2.0 WITH LLVM-exception"
+
+[dependencies]
+log = "0.4"
+isle = { version = "*", path = "../isle/" }
+env_logger = { version = "0.8", default-features = false }
+clap = "2.33"
diff --git a/cranelift/isle/src/bin/isle.rs b/cranelift/isle/islec/src/main.rs
similarity index 100%
rename from cranelift/isle/src/bin/isle.rs
rename to cranelift/isle/islec/src/main.rs