5 files changed, 12 insertions, 21 deletions
diff --git a/src/comp/front/ast.rs b/src/comp/front/ast.rs
index 1d3646f4..c89bba96 100644
--- a/src/comp/front/ast.rs
+++ b/src/comp/front/ast.rs
@@ -1,11 +1,9 @@
 
 import util.common.option;
 import std.map.hashmap;
+import std.util.option;
 import util.common.span;
 import util.common.spanned;
-import util.common.option;
-import util.common.some;
-import util.common.none;
 
 type ident = str;
 
diff --git a/src/comp/front/parser.rs b/src/comp/front/parser.rs
index a17414ee..733e61ea 100644
--- a/src/comp/front/parser.rs
+++ b/src/comp/front/parser.rs
@@ -1,11 +1,12 @@
 import std._io;
+import std.util.option;
+import std.util.some;
+import std.util.none;
+
 import driver.session;
 import util.common;
 import util.common.span;
 import util.common.new_str_hash;
-import util.common.option;
-import util.common.some;
-import util.common.none;
 
 state type parser =
     state obj {
diff --git a/src/comp/middle/fold.rs b/src/comp/middle/fold.rs
index bb0000a7..ed8cf998 100644
--- a/src/comp/middle/fold.rs
+++ b/src/comp/middle/fold.rs
@@ -1,13 +1,13 @@
 import std.map.hashmap;
+import std.util.option;
+import std.util.some;
+import std.util.none;
+
 import util.common.new_str_hash;
 import util.common.spanned;
 import util.common.span;
-import util.common.option;
-import util.common.some;
-import util.common.none;
 import util.common.ty_mach;
 
-
 import front.ast;
 import front.ast.ident;
 import front.ast.name;
diff --git a/src/comp/middle/trans.rs b/src/comp/middle/trans.rs
index c90c817b..b43dff0e 100644
--- a/src/comp/middle/trans.rs
+++ b/src/comp/middle/trans.rs
@@ -3,6 +3,9 @@ import std._vec;
 import std._str.rustrt.sbuf;
 import std._vec.rustrt.vbuf;
 import std.map.hashmap;
+import std.util.option;
+import std.util.some;
+import std.util.none;
 
 import front.ast;
 import driver.session;
@@ -11,9 +14,6 @@ import back.abi;
 
 import util.common.istr;
 import util.common.new_str_hash;
-import util.common.option;
-import util.common.some;
-import util.common.none;
 
 import lib.llvm.llvm;
 import lib.llvm.builder;
diff --git a/src/comp/util/common.rs b/src/comp/util/common.rs
index 51dbfbb1..cbf7aadf 100644
--- a/src/comp/util/common.rs
+++ b/src/comp/util/common.rs
@@ -5,14 +5,6 @@ type pos = rec(uint line, uint col);
 type span = rec(str filename, pos lo, pos hi);
 type spanned[T] = rec(T node, span span);
 
-// FIXME: import std.util.option and use it here.
-// import std.util.option;
-
-tag option[T] {
-  none;
-  some(T);
-}
-
 tag ty_mach {
     ty_i8;
     ty_i16;