Use imports everywhere

sass/form/checkbox-radio.sass

@@ -1,3 +1,5 @@
+@import "shared"
+
 %checkbox-radio
   cursor: pointer
   display: inline-block

sass/form/file.sass

@@ -1,3 +1,5 @@
+@import "shared"
+
 $file-border-color: $border !default
 $file-radius: $radius !default
 

sass/form/input-textarea.sass

@@ -1,3 +1,5 @@
+@import "shared"
+
 $textarea-padding: $control-padding-horizontal !default
 $textarea-max-height: 40em !default
 $textarea-min-height: 8em !default

sass/form/select.sass

@@ -1,3 +1,5 @@
+@import "shared"
+
 $select-colors: $form-colors !default
 
 .select

sass/form/shared.sass

@@ -1,3 +1,6 @@
+@import "../utilities/controls"
+@import "../utilities/mixins"
+
 $form-colors: $colors !default
 
 $input-color: $text-strong !default

sass/form/tools.sass

@@ -1,3 +1,5 @@
+@import "shared"
+
 $label-color: $text-strong !default
 $label-weight: $weight-bold !default