diff --git a/toolchain/mfc/build.py b/toolchain/mfc/build.py
index ee827dec1..d8f12157f 100644
--- a/toolchain/mfc/build.py
+++ b/toolchain/mfc/build.py
@@ -31,20 +31,20 @@ def compute(self) -> typing.Set:
     def __hash__(self) -> int:
         return hash(self.name)
 
-    # Get path to directory that will store the build files
-    def get_build_dirpath(self) -> str:
+    def get_slug(self) -> str:
         if self.isDependency:
-            slug = self.name
-        else:
-            slug = f"{CFG().make_slug()}-{self.name}"
+            return self.name
 
-            if ARG("case_optimization"):
-                m = hashlib.sha256()
-                m.update(input.load().get_fpp(self).encode())
+        m = hashlib.sha256()
+        m.update(self.name.encode())
+        m.update(CFG().make_slug().encode())
+        m.update(input.load({}).get_fpp(self).encode())
 
-                slug = f"{slug}-{m.hexdigest()[:6]}"
+        return m.hexdigest()[:10]
 
-        return os.sep.join([os.getcwd(), "build", slug ])
+    # Get path to directory that will store the build files
+    def get_staging_dirpath(self) -> str:
+        return os.sep.join([os.getcwd(), "build", "staging", self.get_slug() ])
 
     # Get the directory that contains the target's CMakeLists.txt
     def get_cmake_dirpath(self) -> str:
@@ -58,13 +58,13 @@ def get_cmake_dirpath(self) -> str:
 
     def get_install_dirpath(self) -> str:
         # The install directory is located:
-        # Regular:    <root>/build/install/<configuration_slug>
+        # Regular:    <root>/build/install/<slug>
         # Dependency: <root>/build/install/dependencies (shared)
         return os.sep.join([
             os.getcwd(),
             "build",
             "install",
-            'dependencies' if self.isDependency else CFG().make_slug()
+            'dependencies' if self.isDependency else self.get_slug(),
         ])
 
     def get_install_binpath(self) -> str:
@@ -75,14 +75,14 @@ def is_configured(self) -> bool:
         # We assume that if the CMakeCache.txt file exists, then the target is
         # configured. (this isn't perfect, but it's good enough for now)
         return os.path.isfile(
-            os.sep.join([self.get_build_dirpath(), "CMakeCache.txt"])
+            os.sep.join([self.get_staging_dirpath(), "CMakeCache.txt"])
         )
 
     def get_configuration_txt(self) -> typing.Optional[dict]:
         if not self.is_configured():
             return None
 
-        configpath = os.path.join(self.get_build_dirpath(), "configuration.txt")
+        configpath = os.path.join(self.get_staging_dirpath(), "configuration.txt")
         if not os.path.exists(configpath):
             return None
 
@@ -101,7 +101,7 @@ def is_buildable(self) -> bool:
         return True
 
     def configure(self):
-        build_dirpath   = self.get_build_dirpath()
+        build_dirpath   = self.get_staging_dirpath()
         cmake_dirpath   = self.get_cmake_dirpath()
         install_dirpath = self.get_install_dirpath()
 
@@ -154,7 +154,7 @@ def configure(self):
     def build(self):
         input.load({}).generate_fpp(self)
 
-        command = ["cmake", "--build",    self.get_build_dirpath(),
+        command = ["cmake", "--build",    self.get_staging_dirpath(),
                             "--target",   self.name,
                             "--parallel", ARG("jobs"),
                             "--config",   'Debug' if ARG('debug') else 'Release']
@@ -167,7 +167,7 @@ def build(self):
         cons.print(no_indent=True)
 
     def install(self):
-        command = ["cmake", "--install", self.get_build_dirpath()]
+        command = ["cmake", "--install", self.get_staging_dirpath()]
 
         if system(command).returncode != 0:
             raise MFCException(f"Failed to install the [bold magenta]{self.name}[/bold magenta] target.")
@@ -175,7 +175,7 @@ def install(self):
         cons.print(no_indent=True)
 
     def clean(self):
-        build_dirpath = self.get_build_dirpath()
+        build_dirpath = self.get_staging_dirpath()
 
         if not os.path.isdir(build_dirpath):
             return
diff --git a/toolchain/mfc/run/input.py b/toolchain/mfc/run/input.py
index a0f95bc00..6118ca56a 100644
--- a/toolchain/mfc/run/input.py
+++ b/toolchain/mfc/run/input.py
@@ -74,7 +74,7 @@ def __contents_equal(str_a: str, str_b: str) -> bool:
 
             return lhs == rhs
 
-        inc_dir = os.path.join(target.get_build_dirpath(), "include", target.name)
+        inc_dir = os.path.join(target.get_staging_dirpath(), "include", target.name)
         common.create_directory(inc_dir)
 
         fpp_path = os.path.join(inc_dir, "case.fpp")