Switch from checkInputs to nativeCheckInputs on >= NixOS 23.05

This unbreaks package tests on the current nixpkgs-unstable branch, as
`buildPythonPackage` has been adjusted to rename `checkInputs` to
`nativeCheckInputs`, breaking existing checkInputs specifications
because of `strictDeps = 1;`. For more information, check out the
corresponding PR at [1]. This implements the proposed workaround[2]
for supporting both the current nixos-unstable and the last release
branch (NixOS 22.11).

[1]: NixOS/nixpkgs#206742
[2]: NixOS/nixpkgs#206742 (comment)

Signed-off-by: Leon Schuermann <leon@is.currently.online>

pkgs/litedram.nix

@@ -26,6 +26,23 @@ pkgMeta:
 , zeromq
 }:
 
+let
+  # In the current NixOS unstable branch (to be nixos-23.05),
+  # `buildPythonPackage` has been adjusted to rename `checkInputs` to
+  # `nativeCheckInputs`, breaking existing checkInputs specifications because of
+  # `strictDeps = 1;`. For more information, check out the corresponding PR at
+  # [1]. This implements the proposed workaround[2] for supporting both the
+  # current nixos-unstable and the last release branch (NixOS 22.11).
+  #
+  # [1]: https://github.com/NixOS/nixpkgs/pull/206742
+  # [2]: https://github.com/NixOS/nixpkgs/pull/206742#issuecomment-1417674430
+  checkInputsAttr =
+    if lib.versionAtLeast lib.version "23.05" then
+      "nativeCheckInputs"
+    else
+      "checkInputs";
+
+in
 buildPythonPackage rec {
   pname = "litedram";
   version = pkgMeta.git_revision;
@@ -58,7 +75,7 @@ buildPythonPackage rec {
     pytest -v test/
   '';
 
-  checkInputs = [
+  ${checkInputsAttr} = [
     # For test summary
     pandas
     numpy

pkgs/liteeth.nix

@@ -11,6 +11,23 @@ pkgMeta:
 , pyyaml
 }:
 
+let
+  # In the current NixOS unstable branch (to be nixos-23.05),
+  # `buildPythonPackage` has been adjusted to rename `checkInputs` to
+  # `nativeCheckInputs`, breaking existing checkInputs specifications because of
+  # `strictDeps = 1;`. For more information, check out the corresponding PR at
+  # [1]. This implements the proposed workaround[2] for supporting both the
+  # current nixos-unstable and the last release branch (NixOS 22.11).
+  #
+  # [1]: https://github.com/NixOS/nixpkgs/pull/206742
+  # [2]: https://github.com/NixOS/nixpkgs/pull/206742#issuecomment-1417674430
+  checkInputsAttr =
+    if lib.versionAtLeast lib.version "23.05" then
+      "nativeCheckInputs"
+    else
+      "checkInputs";
+
+in
 buildPythonPackage rec {
   pname = "liteeth";
   version = pkgMeta.git_revision;
@@ -24,7 +41,7 @@ buildPythonPackage rec {
     litex
   ];
 
-  checkInputs = [
+  ${checkInputsAttr} = [
     # Some of these are really only required because litex-boards
     # needs them for importing all targets in its __init__.py.
     liteiclink

pkgs/litepcie.nix

@@ -12,6 +12,23 @@ pkgMeta:
 , liteiclink
 }:
 
+let
+  # In the current NixOS unstable branch (to be nixos-23.05),
+  # `buildPythonPackage` has been adjusted to rename `checkInputs` to
+  # `nativeCheckInputs`, breaking existing checkInputs specifications because of
+  # `strictDeps = 1;`. For more information, check out the corresponding PR at
+  # [1]. This implements the proposed workaround[2] for supporting both the
+  # current nixos-unstable and the last release branch (NixOS 22.11).
+  #
+  # [1]: https://github.com/NixOS/nixpkgs/pull/206742
+  # [2]: https://github.com/NixOS/nixpkgs/pull/206742#issuecomment-1417674430
+  checkInputsAttr =
+    if lib.versionAtLeast lib.version "23.05" then
+      "nativeCheckInputs"
+    else
+      "checkInputs";
+
+in
 buildPythonPackage rec {
   pname = "litepcie";
   version = pkgMeta.git_revision;
@@ -27,7 +44,7 @@ buildPythonPackage rec {
     migen
   ];
 
-  checkInputs = [
+  ${checkInputsAttr} = [
     litex-boards
     litedram
     liteeth

pkgs/litescope.nix

@@ -13,6 +13,23 @@ pkgMeta:
 , pythondata-cpu-vexriscv
 }:
 
+let
+  # In the current NixOS unstable branch (to be nixos-23.05),
+  # `buildPythonPackage` has been adjusted to rename `checkInputs` to
+  # `nativeCheckInputs`, breaking existing checkInputs specifications because of
+  # `strictDeps = 1;`. For more information, check out the corresponding PR at
+  # [1]. This implements the proposed workaround[2] for supporting both the
+  # current nixos-unstable and the last release branch (NixOS 22.11).
+  #
+  # [1]: https://github.com/NixOS/nixpkgs/pull/206742
+  # [2]: https://github.com/NixOS/nixpkgs/pull/206742#issuecomment-1417674430
+  checkInputsAttr =
+    if lib.versionAtLeast lib.version "23.05" then
+      "nativeCheckInputs"
+    else
+      "checkInputs";
+
+in
 buildPythonPackage rec {
   pname = "litescope";
   version = pkgMeta.git_revision;
@@ -26,7 +43,7 @@ buildPythonPackage rec {
     litex
   ];
 
-  checkInputs = [
+  ${checkInputsAttr} = [
     litex
     litex-boards
     liteiclink

pkgs/litex-boards.nix

@@ -18,6 +18,23 @@ pkgMeta:
 , litesdcard
 }:
 
+let
+  # In the current NixOS unstable branch (to be nixos-23.05),
+  # `buildPythonPackage` has been adjusted to rename `checkInputs` to
+  # `nativeCheckInputs`, breaking existing checkInputs specifications because of
+  # `strictDeps = 1;`. For more information, check out the corresponding PR at
+  # [1]. This implements the proposed workaround[2] for supporting both the
+  # current nixos-unstable and the last release branch (NixOS 22.11).
+  #
+  # [1]: https://github.com/NixOS/nixpkgs/pull/206742
+  # [2]: https://github.com/NixOS/nixpkgs/pull/206742#issuecomment-1417674430
+  checkInputsAttr =
+    if lib.versionAtLeast lib.version "23.05" then
+      "nativeCheckInputs"
+    else
+      "checkInputs";
+
+in
 buildPythonPackage rec {
   pname = "litex-boards";
   version = pkgMeta.git_revision;
@@ -58,7 +75,7 @@ buildPythonPackage rec {
 
   doCheck = true;
 
-  checkInputs = [
+  ${checkInputsAttr} = [
     pytest
   ];
   checkPhase = ''

pkgs/litex/default.nix

@@ -30,6 +30,23 @@ pkgMeta:
 , zeromq
 }:
 
+let
+  # In the current NixOS unstable branch (to be nixos-23.05),
+  # `buildPythonPackage` has been adjusted to rename `checkInputs` to
+  # `nativeCheckInputs`, breaking existing checkInputs specifications because of
+  # `strictDeps = 1;`. For more information, check out the corresponding PR at
+  # [1]. This implements the proposed workaround[2] for supporting both the
+  # current nixos-unstable and the last release branch (NixOS 22.11).
+  #
+  # [1]: https://github.com/NixOS/nixpkgs/pull/206742
+  # [2]: https://github.com/NixOS/nixpkgs/pull/206742#issuecomment-1417674430
+  checkInputsAttr =
+    if lib.versionAtLeast lib.version "23.05" then
+      "nativeCheckInputs"
+    else
+      "checkInputs";
+
+in
 buildPythonPackage rec {
   pname = "litex";
   version = pkgMeta.git_revision;
@@ -59,7 +76,7 @@ buildPythonPackage rec {
     packaging
   ];
 
-  checkInputs = [
+  ${checkInputsAttr} = [
     litedram
     liteeth
     liteiclink

pkgs/valentyusb/valentyusb-hw_cdc_eptri.nix

@@ -1,6 +1,23 @@
 pkgMeta:
 { lib, buildPythonPackage, litex, cocotb, sigrok-cli, verilog }:
 
+let
+  # In the current NixOS unstable branch (to be nixos-23.05),
+  # `buildPythonPackage` has been adjusted to rename `checkInputs` to
+  # `nativeCheckInputs`, breaking existing checkInputs specifications because of
+  # `strictDeps = 1;`. For more information, check out the corresponding PR at
+  # [1]. This implements the proposed workaround[2] for supporting both the
+  # current nixos-unstable and the last release branch (NixOS 22.11).
+  #
+  # [1]: https://github.com/NixOS/nixpkgs/pull/206742
+  # [2]: https://github.com/NixOS/nixpkgs/pull/206742#issuecomment-1417674430
+  checkInputsAttr =
+    if lib.versionAtLeast lib.version "23.05" then
+      "nativeCheckInputs"
+    else
+      "checkInputs";
+
+in
 buildPythonPackage rec {
   pname = "valentyusb-hw_cdc_eptri";
   version = pkgMeta.git_revision;
@@ -15,7 +32,7 @@ buildPythonPackage rec {
     litex
   ];
 
-  checkInputs = [
+  ${checkInputsAttr} = [
     cocotb
     sigrok-cli
     verilog