Add nix files

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -43,3 +43,5 @@ share/python-wheels/
 .installed.cfg
 *.egg
 MANIFEST
+# Nix build symlinks
+result*

flake.nix

@@ -0,0 +1,231 @@
+{
+  description = "Spectroscopy lock application using RedPitaya";
+
+  # Updating this triggers a lot of rebuilds, since scipy has many dependents,
+  # prepare yourself before updating.
+  # Needs my fork for: https://github.com/NixOS/nixpkgs/pull/330928
+  inputs.nixpkgs.url = "github:doronbehar/nixpkgs/pkg/misoc";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+  inputs.gitignore = {
+    url = "github:hercules-ci/gitignore.nix";
+    # Use the same nixpkgs
+    inputs.nixpkgs.follows = "nixpkgs";
+  };
+  inputs.pyrp3 = {
+    url = "github:linien-org/pyrp3/v2.0.1";
+    flake = false;
+  };
+
+  outputs = { self
+    , nixpkgs
+    , flake-utils
+    , gitignore
+    , ...
+  }@otherInputs:
+  flake-utils.lib.eachDefaultSystem (system:
+    let
+      # Credit @kranzes <3: https://github.com/NixOS/nix/issues/8163#issuecomment-1517774089
+      flakeDate2human = flakeInput: builtins.concatStringsSep "-" (builtins.match "(.{4})(.{2})(.{2}).*" flakeInput.lastModifiedDate);
+      lockFile = builtins.fromJSON (builtins.readFile ./flake.lock);
+      pkgs = import nixpkgs {
+        inherit system;
+      };
+      inherit (pkgs) lib;
+      pythonDevEnv = (python.withPackages(ps: builtins.attrValues {
+        inherit (ps)
+        click
+        cma
+        matplotlib
+        migen
+        misoc
+        myhdl
+        numpy
+        paramiko
+        plumbum
+        pylpsd
+        pyqt5
+        pyqtgraph
+        pyrp3
+        pytest
+        pytest-plt
+        rpyc
+        superqt
+        scipy # From our fork
+        # For text editor
+        jedi-language-server
+        debugpy
+        # For testing installations
+        setuptools
+        setuptools-scm
+        ;
+      })).overrideAttrs (old: {
+        meta = old.meta // {
+          description = "Linien Python development environment";
+        };
+      });
+      inherit (gitignore.lib) gitignoreFilterWith;
+      get-local-src = subdirectory: lib.cleanSourceWith {
+        filter = gitignoreFilterWith {
+          basePath = ./.;
+          extraRules = ''
+            flake*
+          '';
+        };
+        src = "${self}/${subdirectory}";
+      };
+      get-github-src-version = pname: {
+        src = pkgs.fetchFromGitHub {
+          inherit (lockFile.nodes.${pname}.original)
+            owner
+            repo
+          ;
+          sha256 = lockFile.nodes.${pname}.locked.narHash;
+          rev = lockFile.nodes.${pname}.locked.rev;
+        };
+        version = if (builtins.hasAttr "ref" lockFile.nodes.${pname}.original) then
+          lockFile.nodes.${pname}.original.ref
+        else
+          flakeDate2human otherInputs.${pname}
+        ;
+      };
+      linienBuildArgs = {
+        version = (builtins.fromTOML (builtins.readFile ./linien-server/pyproject.toml)).project.version;
+      };
+      # Generate a `python` interpreter, with some python packages overriden
+      # and added - we merge the pythonOverrides of scipy-fork as well. We use
+      # lib.composeExtensions as instructed here:
+      # https://github.com/NixOS/nixpkgs/issues/44426
+      pythonOverrides = lib.composeExtensions
+        # Empty override, may be useful in the future
+        (selfPython: superPython: {})
+        (selfPython: superPython: {
+          linien-gui = superPython.python.pkgs.callPackage ./linien-gui/pkg.nix (linienBuildArgs // {
+            src = get-local-src "linien-gui";
+            inherit (selfPython)
+              linien-client
+              pyqtgraph
+              app-paths
+            ;
+          });
+          linien-client = superPython.python.pkgs.callPackage ./linien-client/pkg.nix (linienBuildArgs // {
+            src = get-local-src "linien-client";
+            inherit (selfPython)
+              linien-common
+            ;
+          });
+          linien-common = superPython.python.pkgs.callPackage ./linien-common/pkg.nix (linienBuildArgs // {
+            src = get-local-src "linien-common";
+          });
+          linien-server = superPython.python.pkgs.callPackage ./linien-server/pkg.nix (linienBuildArgs // {
+            src = get-local-src "linien-server";
+            inherit (selfPython)
+              linien-common
+              pylpsd
+              pyrp3
+            ;
+          });
+          pyrp3 = superPython.python.pkgs.callPackage
+            ./pyrp3
+            (get-github-src-version "pyrp3")
+          ;
+        })
+      ;
+      python = (pkgs.python3.override {
+        packageOverrides = pythonOverrides;
+      }).overrideAttrs(old: {
+        meta = old.meta // {
+          description = "Python interpreter with .pkgs set including linien";
+        };
+      });
+      python-armv7l-hf-multiplatform = (pkgs.pkgsCross.armv7l-hf-multiplatform.python3.override {
+        packageOverrides = pythonOverrides;
+      }).overrideAttrs(old: {
+        meta = old.meta // {
+          description = "Python interpreter (cross compiled) with .pkgs set including linien";
+        };
+      });
+      buildDeb = {pkg, targetArch, pkgName ? pkg.name}: pkgs.stdenv.mkDerivation {
+        name = "${pkg.name}.deb";
+        buildInputs = [
+          pkgs.dpkg
+        ];
+        unpackPhase = "true";
+        buildPhase = ''
+          export HOME=$PWD
+          mkdir -p pkgtree/nix/store/
+          for item in "$(cat ${pkgs.referencesByPopularity pkg})"; do
+            cp -r $item pkgtree/nix/store/
+          done
+
+          mkdir -p pkgtree/bin
+          cp -r ${pkg}/bin/* pkgtree/bin/
+          # We want Systemd files to be integrated with the target OS Systemd
+          if [[ -d ${pkg}/lib/systemd ]]; then
+            mkdir -p pkgtree/lib
+            cp -r ${pkg}/lib/systemd pkgtree/lib/
+          fi
+
+          chmod -R a+rwx pkgtree/nix
+          chmod -R a+rwx pkgtree/bin
+          mkdir pkgtree/DEBIAN
+          cat << EOF > pkgtree/DEBIAN/control
+          Package: ${pkgName}
+          Version: ${pkg.version}
+          Maintainer: "github.com/bleykauf"
+        ''
+        # TODO: Ideally we would parse `pkgs.stdenv.gcc.arch` or a similar
+        # attribute and use this argument such that dpkg-deb will be
+        # satisfied with our name of the platform.
+        + ''
+          Architecture: ${targetArch}
+          Description: ${pkg.meta.description}
+          EOF
+        '';
+        installPhase = ''
+          dpkg-deb -b pkgtree
+          mv pkgtree.deb $out
+        '';
+        meta = {
+          description = "Debian package of ${pkg.name} compiled for architecture ${targetArch}";
+        };
+      };
+    in {
+      devShells = {
+        default = pkgs.mkShell {
+          nativeBuildInputs = [
+            pythonDevEnv
+            # To inspect deb packages we build, using:
+            #
+            #    dpkg --contents $(nix build --print-out-paths -L .\#linien-server-deb-armv7l-hf-multiplatform)`
+            pkgs.dpkg
+            # To manage linien.bin
+            pkgs.git-lfs
+          ];
+        };
+      };
+      packages = {
+        # Put it here so it'll be easy to run commands such as:
+        #
+        #    nix why-depends --all --derivation .\#python.pkgs.linien-gui .\#nixpkgs-python.pkgs.scipy
+        #
+        nixpkgs-python = pkgs.python3;
+        inherit pythonDevEnv;
+        # The server is built for debian only, so we don't inherit it here
+        inherit (python.pkgs)
+          linien-common
+          linien-client
+          linien-gui
+        ;
+        inherit
+          python
+          python-armv7l-hf-multiplatform
+        ;
+        linien-server-deb-armv7l-hf-multiplatform = buildDeb {
+          pkg = python-armv7l-hf-multiplatform.pkgs.linien-server;
+          targetArch = "armhf";
+          pkgName = "linien-server";
+        };
+      };
+    }
+  );
+}

linien-client/pkg.nix

@@ -0,0 +1,42 @@
+{ lib
+, buildPythonPackage
+, version
+, src
+, setuptools
+, fabric
+, typing-extensions
+, linien-common
+}:
+
+buildPythonPackage {
+  pname = "linien-client";
+  inherit version;
+  pyproject = true;
+
+  inherit src;
+
+  nativeBuildInputs = [
+    setuptools
+  ];
+
+  propagatedBuildInputs = [
+    fabric
+    typing-extensions
+    linien-common
+  ];
+
+  # Same issue as explained in ../linien-common/pkg.nix
+  preBuild = ''
+    export HOME="$(mktemp -d)"
+  '';
+
+  pythonImportsCheck = [
+    "linien_client"
+  ];
+
+  meta = with lib; {
+    description = "Client components of the Linien spectroscopy lock application";
+    homepage = "https://github.com/linien-org/linien";
+    license = licenses.gpl3;
+  };
+}