diff --git a/lib/spack/spack/installer.py b/lib/spack/spack/installer.py
index b528d2860e0..9e5fbef8800 100644
--- a/lib/spack/spack/installer.py
+++ b/lib/spack/spack/installer.py
@@ -868,7 +868,6 @@ def __init__(
         pkg: "spack.package_base.PackageBase",
         request: BuildRequest,
         *,
-        compiler: bool = False,
         start: float = 0.0,
         attempts: int = 0,
         status: BuildStatus = BuildStatus.QUEUED,
@@ -1198,15 +1197,15 @@ def execute(self, install_status):
 
         tty.msg(install_msg(pkg_id, self.pid, install_status))
         self.start = self.start or time.time()
-        self.status = STATUS_INSTALLING
+        self.status = BuildStatus.INSTALLING
 
         try:
             if _install_from_cache(pkg, self.explicit, unsigned):
-                if self.compiler:
-                    _add_compiler_package_to_config(pkg)
                 return ExecuteResult.SUCCESS
             elif self.cache_only:
-                raise InstallError("No binary found when cache-only was specified", pkg=pkg)
+                raise spack.error.InstallError(
+                    "No binary found when cache-only was specified", pkg=pkg
+                )
             else:
                 tty.msg(f"No binary for {pkg_id} found: installing from source")
                 return ExecuteResult.MISSING_BINARY
@@ -1224,10 +1223,9 @@ def build_task(self, installed):
         build_task = BuildTask(
             pkg=self.pkg,
             request=self.request,
-            compiler=self.compiler,
             start=0,
             attempts=self.attempts,
-            status=STATUS_ADDED,
+            status=BuildStatus.QUEUED,
             installed=installed,
         )
 
@@ -1756,7 +1754,7 @@ def _requeue_as_build_task(self, task):
 
                 # Add a new task if we need one
                 if dep_id not in self.build_tasks and dep_id not in self.installed:
-                    self._add_init_task(dep_pkg, task.request, False, self.all_dependencies)
+                    self._add_init_task(dep_pkg, task.request, self.all_dependencies)
                 # Add edges for an existing task if it exists
                 elif dep_id in self.build_tasks:
                     for parent in dep.dependents():
@@ -1862,28 +1860,6 @@ def _overwrite_install_task(self, task: Task, install_status: InstallStatus) ->
         too, mark the spec as uninstalled. This function always the original
         install error if installation fails.
         """
-
-
-class OverwriteInstall:
-    def __init__(
-        self,
-        installer: PackageInstaller,
-        database: spack.database.Database,
-        task: Task,
-        install_status: InstallStatus,
-    ):
-        self.installer = installer
-        self.database = database
-        self.task = task
-        self.install_status = install_status
-
-    def install(self):
-        """
-        Try to run the install task overwriting the package prefix.
-        If this fails, try to recover the original install prefix. If that fails
-        too, mark the spec as uninstalled. This function always the original
-        install error if installation fails.
-        """
         try:
             with fs.replace_directory_transaction(task.pkg.prefix):
                 rc = self._install_task(task, install_status)
diff --git a/lib/spack/spack/test/installer.py b/lib/spack/spack/test/installer.py
index 2fc8beeaf92..4488eaf6542 100644
--- a/lib/spack/spack/test/installer.py
+++ b/lib/spack/spack/test/installer.py
@@ -81,7 +81,7 @@ def create_install_task(
     pkg: spack.package_base.PackageBase, install_args: Optional[dict] = None
 ) -> inst.InstallTask:
     request = inst.BuildRequest(pkg, {} if install_args is None else install_args)
-    return inst.InstallTask(pkg, request, False, 0, 0, inst.STATUS_ADDED, set())
+    return inst.InstallTask(pkg, request=request, status=inst.BuildStatus.QUEUED)
 
 
 def create_installer(