flake.nix

@@ -55,10 +55,6 @@
 
       checks = forAllSystems (pkgs: {
         formatting = treefmtEval.${pkgs.system}.config.build.check self;
-        packages = pkgs.symlinkJoin {
-          name = "all";
-          paths = pkgs.lib.attrsets.attrValues self.packages.${pkgs.system};
-        };
       });
 
       # this is mainly so that nix-update works. I have no idea if this works without it.
@@ -70,5 +66,39 @@
         path = ./templates/default;
         description = "basic template to get started with an ecp5";
       };
+
+      # example, not really something you should import unless you want everything.
+      devShells = forAllSystems (pkgs: {
+        default = pkgs.mkShell {
+          packages = with pkgs; [
+            (python3.withPackages (
+              ps: with ps; [
+                cocotb
+                cocotb-bus
+                litex
+                litedram
+                liteeth
+                litescope
+                litespi
+                liteiclink
+                pythondata-cpu-vexriscv
+                pythondata-software-compiler_rt
+                pythondata-software-picolibc
+                amaranth
+              ]
+            ))
+            yosys
+            nextpnr
+            # simulators
+            verilog
+            verilator
+            # support package
+            trellis
+            # loader
+            openfpgaloader
+            ecpdap # easier to poke probes.
+          ];
+        };
+      });
     };
 }

pkgs/litedram.nix

@@ -7,13 +7,13 @@
 }:
 buildPythonPackage rec {
   pname = "litedram";
-  version = "2024.12";
+  version = "2023.12";
 
   src = pkgs.fetchFromGitHub {
     owner = "enjoy-digital";
     repo = "litedram";
     rev = "${version}";
-    hash = "sha256-IlqaB6zocfo5MCvmNJYdsNOuLjz07f3yTwL/wTqPq8E=";
+    hash = "sha256-EaUszy0v6r5sKM5d5YmpRbR8Cf9xITObU71zUpg9cLU=";
   };
 
   buildInputs = [
@@ -21,5 +21,8 @@ buildPythonPackage rec {
     migen
   ];
 
+  checkPhase = ''
+    python -m unittest test
+  '';
   doCheck = true;
 }

pkgs/liteeth.nix

@@ -1,9 +1,10 @@
 {
   pkgs,
+  lib,
   buildPythonPackage,
   migen,
+  setuptools,
   litex,
-  litespi,
   pyyaml,
 }:
 buildPythonPackage rec {
@@ -26,9 +27,11 @@ buildPythonPackage rec {
   ];
 
   nativeCheckInputs = [
-    litespi
     pyyaml
   ];
 
+  checkPhase = ''
+    python -m unittest test
+  '';
   doCheck = true;
 }

pkgs/liteiclink.nix

@@ -2,33 +2,24 @@
   pkgs,
   buildPythonPackage,
   litex,
-  migen,
-  liteeth,
-  pytest,
 }:
 buildPythonPackage rec {
   pname = "liteiclink";
-  version = "2024.12";
+  version = "2023.12";
 
   src = pkgs.fetchFromGitHub {
     owner = "enjoy-digital";
     repo = "liteiclink";
     rev = "${version}";
-    hash = "sha256-eWetbj6nhaNS8PsQlkwAZ4MCgHy9CIgJBP8u4AP884M=";
+    hash = "sha256-5Hp5vFqmfkXo1q60FvOkToTy952svirChIPIvkam04M=";
   };
 
   buildInputs = [
     litex
-    migen
-  ];
-
-  nativeCheckInputs = [
-    pytest
-    liteeth
   ];
 
   checkPhase = ''
-    pytest -v test/
+    python -m unittest test
   '';
   doCheck = true;
 }

pkgs/litescope.nix

@@ -1,24 +1,28 @@
 {
   pkgs,
+  lib,
   buildPythonPackage,
   migen,
+  setuptools,
   litex,
 }:
 buildPythonPackage rec {
   pname = "litescope";
-  version = "2024.12";
+  version = "2023.12";
 
   src = pkgs.fetchFromGitHub {
     owner = "enjoy-digital";
     repo = "litescope";
     rev = "${version}";
-    hash = "sha256-BlDEiM65oOLTc6nXYNyBPn+XLni6EhRdNjkZgs+gDwE=";
+    hash = "sha256-OWC+XwB+BzlCQkPKJCbQ0W4T6JbsInldrn9jYYjWypM=";
   };
 
   buildInputs = [
     litex
-    migen
   ];
 
+  checkPhase = ''
+    python -m unittest test
+  '';
   doCheck = true;
 }

pkgs/litespi.nix

@@ -8,13 +8,13 @@
 }:
 buildPythonPackage rec {
   pname = "litespi";
-  version = "2024.12";
+  version = "2023.12";
 
   src = pkgs.fetchFromGitHub {
     owner = "litex-hub";
     repo = "litespi";
     rev = "${version}";
-    hash = "sha256-BiRyYCysr7Sb/XPYzUz8vSKtEmRz/p/2RMxX8Bmyrd4=";
+    hash = "sha256-XYeWokF1IGtZWRK+6jhRSN91MOV5vyh5aO08sbtFBxw=";
   };
 
   buildInputs = [
@@ -28,5 +28,8 @@ buildPythonPackage rec {
   nativeCheckInputs = [
   ];
 
+  checkPhase = ''
+    python -m unittest test
+  '';
   doCheck = true;
 }

pkgs/pythondata-cpu-vexriscv.nix

@@ -4,13 +4,13 @@
 }:
 buildPythonPackage rec {
   pname = "pythondata-cpu-vexriscv";
-  version = "2024.12";
+  version = "2023.12";
 
   src = pkgs.fetchFromGitHub {
     owner = "litex-hub";
     repo = "pythondata-cpu-vexriscv";
     rev = "${version}";
-    hash = "sha256-wkdKTODOu83hCsBTcH+5skNlHr6ypuUu04Tyop4PrEc=";
+    hash = "sha256-1RgwJCYxtiP5dfRHulfTNBgu6fum6RfoqkbFIlRTgKI=";
   };
 
   doCheck = false;

pkgs/pythondata-software-compiler_rt.nix

@@ -4,7 +4,7 @@
 }:
 buildPythonPackage rec {
   pname = "pythondata-software-compiler_rt";
-  version = "2024.12";
+  version = "2023.12";
 
   src = pkgs.fetchFromGitHub {
     owner = "litex-hub";

pkgs/pythondata-software-picolibc.nix

@@ -4,7 +4,7 @@
 }:
 buildPythonPackage rec {
   pname = "pythondata-software-picolibc";
-  version = "2024.12";
+  version = "2023.12";
 
   src = pkgs.fetchFromGitHub {
     owner = "litex-hub";