feat(nix-hm): add flake for deepfilternet

pkgs/deepfilternet/flake.lock

@@ -0,0 +1,79 @@
+{
+  "nodes": {
+    "deepfilternet-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1693481377,
+        "narHash": "sha256-5bYbfO1kmduNm9YV5niaaPvRIDRmPt4QOX7eKpK+sWY=",
+        "owner": "Rikorose",
+        "repo": "DeepFilterNet",
+        "rev": "978576aa8400552a4ce9730838c635aa30db5e61",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Rikorose",
+        "repo": "DeepFilterNet",
+        "rev": "978576aa8400552a4ce9730838c635aa30db5e61",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1705309234,
+        "narHash": "sha256-uNRRNRKmJyCRC/8y1RqBkqWBLM034y4qN7EprSdmgyA=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "1ef2e671c3b0c19053962c07dbda38332dcebf26",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1706925685,
+        "narHash": "sha256-hVInjWMmgH4yZgA4ZtbgJM1qEAel72SYhP5nOWX4UIM=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "79a13f1437e149dc7be2d1290c74d378dad60814",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "deepfilternet-src": "deepfilternet-src",
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

pkgs/deepfilternet/flake.nix

@@ -0,0 +1,77 @@
+{
+  description = "Flake for deepfilternet, a noise supression algorithm.";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    deepfilternet-src = {
+      flake = false;
+      url =
+        "github:Rikorose/DeepFilterNet?rev=978576aa8400552a4ce9730838c635aa30db5e61";
+    };
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, deepfilternet-src }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        lib = nixpkgs.lib;
+        pkgs = nixpkgs.legacyPackages.${system};
+        rust-toolchain = pkgs.symlinkJoin {
+          name = "rust-toolchain";
+          paths = with pkgs; [ rustc cargo ];
+        };
+      in rec {
+        packages.default = pkgs.rustPlatform.buildRustPackage rec {
+          pname = "deepfilternet";
+          version = "0.5.6";
+          src = "${deepfilternet-src}";
+          cargoLock = {
+            lockFile = "${deepfilternet-src}/Cargo.lock";
+            allowBuiltinFetchGit = true;
+          };
+          buildInputs = with pkgs; [ ladspaH ];
+          buildAndTestSubdir = "ladspa";
+          postInstall = ''
+            mkdir $out/lib/ladspa
+            mv $out/lib/libdeep_filter_ladspa.so $out/lib/ladspa/libdeep_filter_ladspa.so
+          '';
+          meta = {
+            description = "Noise supression using deep filtering";
+            homepage = "https://github.com/Rikorose/DeepFilterNet";
+            license = with lib.licenses; [ mit asl20 ];
+            changelog =
+              "https://github.com/Rikorose/DeepFilterNet/releases/tag/${src.rev}";
+          };
+        };
+      }) // {
+        overlays.default = final: prev: {
+          deepfilternet = self.packages.${final.system}.default;
+          easyeffects = let
+            pkgs = final.pkgs;
+            lib = pkgs.lib;
+          in prev.easyeffects.overrideAttrs (oldAttrs: {
+            buildInputs = with pkgs; [ deepfilternet ] ++ oldAttrs.buildInputs;
+            preFixup = let
+              lv2Plugins = with pkgs; [
+                calf # compressor exciter, bass enhancer and others
+                lsp-plugins # delay, limiter, multiband compressor
+                mda_lv2 # loudness
+                zam-plugins # maximizer
+              ];
+              ladspaPlugins = with pkgs; [
+                deepfilternet
+                rubberband # pitch shifting
+              ];
+            in ''
+              gappsWrapperArgs+=(
+                --set LV2_PATH "${lib.makeSearchPath "lib/lv2" lv2Plugins}"
+                --set LADSPA_PATH "${
+                  lib.makeSearchPath "lib/ladspa" ladspaPlugins
+                }"
+              )
+            '';
+          });
+        };
+
+      };
+}