diff --git a/flupdt/flake_build.py b/flupdt/flake_build.py
index 003af05..24fd2a1 100644
--- a/flupdt/flake_build.py
+++ b/flupdt/flake_build.py
@@ -23,7 +23,9 @@ def build_output(path: str, output: str) -> str | None:
     """
     logger.info(f"build {output}")
     logger.debug(f"outputting to {OUTPUT_DIR}/{output}.nixoutput")
-    out = bash_wrapper(f"nix build {path}#{output} -o {OUTPUT_DIR}/{output}.nixoutput --accept-flake-config")
+    out = bash_wrapper(
+        f"nix build {path}#{output} -o {OUTPUT_DIR}/{output}.nixoutput --accept-flake-config"
+    )
     logger.debug("output")
     logger.debug(out[0])
     logger.debug("error")
diff --git a/flupdt/flake_show.py b/flupdt/flake_show.py
index 2d626b7..b57ccbb 100644
--- a/flupdt/flake_show.py
+++ b/flupdt/flake_show.py
@@ -53,7 +53,9 @@ def get_derivations_from_check(nix_path: str, path_to_flake: str) -> list[str]:
     :param path_to_flake: path to flake to be checked
     :returns a list of all valid derivations in the flake
     """
-    flake_check = bash_wrapper(f"{nix_path} flake check --verbose --keep-going --accept-flake-config", path=path_to_flake)
+    flake_check = bash_wrapper(
+        f"{nix_path} flake check --verbose --keep-going --accept-flake-config", path=path_to_flake
+    )
     if flake_check[2] != 0:
         logger.warning(
             "nix flake check returned non-zero exit code, collecting all available outputs"
@@ -71,7 +73,9 @@ def get_derivations_from_check(nix_path: str, path_to_flake: str) -> list[str]:
     return derivations
 
 
-def get_derivations(path_to_flake: str, *, allow_import_from_derivation: False = False) -> list[str]:
+def get_derivations(
+    path_to_flake: str, *, allow_import_from_derivation: False = False
+) -> list[str]:
     """Gets all derivations present in a flake.
 
     :param path_to_flake: path to flake to be checked
@@ -83,7 +87,7 @@ def get_derivations(path_to_flake: str, *, allow_import_from_derivation: False =
     if nix_path is None:
         status_msg = "nix is not available in the PATH, please verify that it is installed"
         raise RuntimeError(status_msg)
-    cmd = f"{nix_path} flake show --json --accept-flake-path"
+    cmd = f"{nix_path} flake show --json --accept-flake-config --all-systems"
     cmd += " --allow-import-from-derivation" if allow_import_from_derivation else ""
     flake_show = bash_wrapper(cmd, path=path_to_flake)
     if flake_show[2] != 0:
diff --git a/flupdt/main.py b/flupdt/main.py
index 53e48cb..714733e 100755
--- a/flupdt/main.py
+++ b/flupdt/main.py
@@ -99,7 +99,8 @@ def build_or_eval(args: Namespace) -> None:
     """
     flake_path = args.flake_path
     derivations, hydra_jobs = partition(
-        lambda s: s.startswith("hydraJobs"), get_derivations(flake_path, args["allow-import-from-derivation"])
+        lambda s: s.startswith("hydraJobs"),
+        get_derivations(flake_path, allow_import_from_derivation=args.allow_import_from_derivation),
     )
     derivations, hydra_jobs = list(derivations), list(hydra_jobs)
     logger.info(f"derivations: {list(derivations)}")