add nix-based packaging

Author: DrRuhe

.envrc

@@ -0,0 +1 @@
+use_flake

.github/workflows/nix-packaging.yml

@@ -0,0 +1,33 @@
+# This is a basic workflow to help you get started with Actions
+
+name: "Nix Packaging"
+
+# Controls when the workflow will run
+on:
+  # Triggers the workflow on push or pull request events but only for the "main" branch
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  build:
+    name: "Build Samply using nix flake"
+    runs-on: ubuntu-22.04
+    timeout-minutes: 30
+    steps:
+      - uses: actions/checkout@v3
+      - uses: cachix/install-nix-action@v17
+        with:
+          nix_path: nixpkgs=channel:nixos-22.05
+      # - uses: cachix/cachix-action@v10
+      #   with:
+      #     name: samply
+      #     authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+
+      - name: Build samply with nix
+        run: nix build -L .#

.gitignore

@@ -1,6 +1,9 @@
 target
 profile.json
 .DS_Store
+.direnv/
+
+result-bin
 
 # These libxul blobs are too big to put them in the repo.
 # The benchmarks example downloads them from the Mozilla symbol server on demand.

flake.lock

@@ -0,0 +1,144 @@
+{
+  description = "Samply";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+
+    crane = {
+      url = "github:ipetkov/crane";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    flake-utils.url = "github:numtide/flake-utils";
+
+    advisory-db = {
+      url = "github:rustsec/advisory-db";
+      flake = false;
+    };
+
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs = {
+        nixpkgs.follows = "nixpkgs";
+        flake-utils.follows = "flake-utils";
+      };
+    };
+
+  };
+
+  outputs = { self, nixpkgs, crane, flake-utils, advisory-db, ... }@inputs:
+    flake-utils.lib.eachSystem [ "aarch64-darwin" "x86_64-darwin" "aarch64-linux" "x86_64-linux" ] (system:
+      let
+        pkgs = import nixpkgs {
+          inherit system;
+          overlays = [
+            (import inputs.rust-overlay)
+          ];
+        };
+
+        inherit (pkgs) lib;
+
+
+        toolchain-settings = {
+          extensions = [ "rust-src" ];
+          targets = [ "aarch64-apple-darwin" "x86_64-apple-darwin" "aarch64-unknown-linux-gnu" "x86_64-unknown-linux-gnu" ];
+        };
+        # stable
+        rust-toolchain = pkgs.rust-bin.stable.latest.default.override toolchain-settings;
+        # nightly
+        # rust-toolchain = pkgs.rust-bin.selectLatestNightlyWith (toolchain: toolchain.default.override toolchain-settings);
+
+        craneLib = (crane.mkLib pkgs).overrideToolchain rust-toolchain;
+
+        src = craneLib.cleanCargoSource ./.;
+
+        buildInputs = with pkgs; [
+          # Add additional build inputs here
+          openssl
+          pkg-config
+        ];
+
+
+
+        # Build *just* the cargo dependencies, so we can reuse
+        # all of that work (e.g. via cachix) when running in CI
+        cargoArtifacts = craneLib.buildDepsOnly {
+          inherit src buildInputs;
+        };
+
+        # Build the actual crate itself, reusing the dependency
+        # artifacts from above.
+        samply = craneLib.buildPackage {
+          inherit cargoArtifacts src buildInputs;
+          pname = "samply";
+          cargoExtraArgs = "--bin samply";
+        };
+      in
+      {
+        checks = {
+          # Build the crate as part of `nix flake check` for convenience
+          inherit samply;
+
+          # Run clippy (and deny all warnings) on the crate source,
+          # again, resuing the dependency artifacts from above.
+          #
+          # Note that this is done as a separate derivation so that
+          # we can block the CI if there are issues here, but not
+          # prevent downstream consumers from building our crate by itself.
+          cargo-clippy = craneLib.cargoClippy {
+            inherit cargoArtifacts src buildInputs;
+            cargoClippyExtraArgs = "--all-targets -- --deny warnings";
+          };
+
+          cargo-doc = craneLib.cargoDoc {
+            inherit cargoArtifacts src buildInputs;
+          };
+
+          # Check formatting
+          cargo-fmt = craneLib.cargoFmt {
+            inherit src;
+          };
+
+          # Audit dependencies
+          cargo-audit = craneLib.cargoAudit {
+            inherit src advisory-db;
+          };
+
+          # Run tests with cargo-nextest
+          # Consider setting `doCheck = false` on `samply` if you do not want
+          # the tests to run twice
+          cargo-nextest = craneLib.cargoNextest {
+            inherit cargoArtifacts src buildInputs;
+            partitions = 1;
+            partitionType = "count";
+          };
+        } // lib.optionalAttrs (system == "x86_64-linux") {
+          # NB: cargo-tarpaulin only supports x86_64 systems
+          # Check code coverage (note: this will not upload coverage anywhere)
+          cargo-coverage = craneLib.cargoTarpaulin {
+            inherit cargoArtifacts src;
+          };
+        };
+
+        packages.default = samply;
+
+        apps.default = flake-utils.lib.mkApp {
+          drv = samply;
+        };
+
+        overlays = final: prev: {
+          inherit samply;
+        };
+
+        devShells.default = pkgs.mkShell {
+          inputsFrom = builtins.attrValues self.checks;
+
+          packages = with pkgs; [
+            rust-toolchain
+            rust-analyzer
+          ] ++ buildInputs;
+
+        };
+      }
+    );
+}