Got windows cross-compilation working

The resulting binary is still untested, but it _does_ compile! This required re-jiggering basically everything about the nix flake, including replacing the toolchain management to fenix.
Use builtin tokio ctrl-c rather than signal-hook-tokio
2023-11-14 22:49:49 +01:00 · 2023-11-11 21:39:40 +01:00
6 changed files with 238 additions and 207 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@ -20,6 +20,15 @@ dependencies = [
 "tracing-futures",
 ]

+[[package]]
+name = "addr2line"
+version = "0.21.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a30b2e23b9e17a9f90641c7ab1549cd9b44f296d3ccbf309d2863cfe398a0cb"
+dependencies = [
+ "gimli",
+]
+
 [[package]]
 name = "adler"
 version = "1.0.2"
@ -140,6 +149,21 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"

+[[package]]
+name = "backtrace"
+version = "0.3.69"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2089b7e3f35b9dd2d0ed921ead4f6d318c27680d4a5bd167b3ee120edb105837"
+dependencies = [
+ "addr2line",
+ "cc",
+ "cfg-if",
+ "libc",
+ "miniz_oxide",
+ "object",
+ "rustc-demangle",
+]
+
 [[package]]
 name = "base64"
 version = "0.13.1"
@ -503,7 +527,6 @@ dependencies = [
 "serde_yaml",
 "sha2",
 "signal-hook",
- "signal-hook-tokio",
 "tempdir",
 "thiserror",
 "tls-listener",
@ -808,6 +831,12 @@ dependencies = [
 "wasi",
 ]

+[[package]]
+name = "gimli"
+version = "0.28.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6fb8d784f27acf97159b40fc4db5ecd8aa23b9ad5ef69cdd136d3bc80665f0c0"
+
 [[package]]
 name = "gix"
 version = "0.44.1"
@ -1570,7 +1599,7 @@ dependencies = [
 "httpdate",
 "itoa",
 "pin-project-lite",
- "socket2",
+ "socket2 0.4.9",
 "tokio",
 "tower-service",
 "tracing",
@ -1732,7 +1761,7 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bd302af1b90f2463a98fa5ad469fc212c8e3175a41c3068601bfa2727591c5be"
 dependencies = [
- "socket2",
+ "socket2 0.4.9",
 "widestring",
 "winapi",
 "winreg",
@ -1820,9 +1849,9 @@ dependencies = [

 [[package]]
 name = "libc"
-version = "0.2.142"
+version = "0.2.150"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6a987beff54b60ffa6d51982e1aa1146bc42f19bd26be28b0586f252fccf5317"
+checksum = "89d92a4743f9a61002fae18374ed11e7973f530cb3a3255fb354818118b2203c"

 [[package]]
 name = "linked-hash-map"
@ -1941,14 +1970,13 @@ dependencies = [

 [[package]]
 name = "mio"
-version = "0.8.6"
+version = "0.8.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b9d9a46eff5b4ff64b45a9e316a6d1e0bc719ef429cbec4dc630684212bfdf9"
+checksum = "3dce281c5e46beae905d4de1870d8b1509a9142b62eedf18b443b011ca8343d0"
 dependencies = [
 "libc",
- "log",
 "wasi",
- "windows-sys 0.45.0",
+ "windows-sys 0.48.0",
 ]

 [[package]]
@ -2072,6 +2100,15 @@ dependencies = [
 "libc",
 ]

+[[package]]
+name = "object"
+version = "0.32.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9cf5f9dd3933bd50a9e1f149ec995f39ae2c496d31fd772c1fd45ebc27e902b0"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "once_cell"
 version = "1.17.1"
@ -2233,9 +2270,9 @@ dependencies = [

 [[package]]
 name = "pin-project-lite"
-version = "0.2.9"
+version = "0.2.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e0a7ae3ac2f1173085d398531c705756c94a4c56843785df85a60c1a0afac116"
+checksum = "8afb450f006bf6385ca15ef45d71d2288452bc3683ce2e2cacc0d18e4be60b58"

 [[package]]
 name = "pin-utils"
@ -2576,6 +2613,12 @@ dependencies = [
 "walkdir",
 ]

+[[package]]
+name = "rustc-demangle"
+version = "0.1.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
+
 [[package]]
 name = "rustix"
 version = "0.37.18"
@ -2804,18 +2847,6 @@ dependencies = [
 "libc",
 ]

-[[package]]
-name = "signal-hook-tokio"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "213241f76fb1e37e27de3b6aa1b068a2c333233b59cca6634f634b80a27ecf1e"
-dependencies = [
- "futures-core",
- "libc",
- "signal-hook",
- "tokio",
-]
-
 [[package]]
 name = "slab"
 version = "0.4.8"
@ -2841,6 +2872,16 @@ dependencies = [
 "winapi",
 ]

+[[package]]
+name = "socket2"
+version = "0.5.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7b5fac59a5cb5dd637972e5fca70daf0523c9067fcdc4842f053dae04a18f8e9"
+dependencies = [
+ "libc",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "spin"
 version = "0.5.2"
@ -3005,11 +3046,11 @@ dependencies = [

 [[package]]
 name = "tokio"
-version = "1.28.1"
+version = "1.34.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0aa32867d44e6f2ce3385e89dceb990188b8bb0fb25b0cf576647a6f98ac5105"
+checksum = "d0c014766411e834f7af5b8f4cf46257aab4036ca95e9d2c144a10f59ad6f5b9"
 dependencies = [
- "autocfg",
+ "backtrace",
 "bytes",
 "libc",
 "mio",
@ -3017,16 +3058,16 @@ dependencies = [
 "parking_lot",
 "pin-project-lite",
 "signal-hook-registry",
- "socket2",
+ "socket2 0.5.5",
 "tokio-macros",
 "windows-sys 0.48.0",
 ]

 [[package]]
 name = "tokio-macros"
-version = "2.1.0"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "630bdcf245f78637c13ec01ffae6187cca34625e8c63150d424b59e55af2675e"
+checksum = "5b8a1e28f2deaa14e508979454cb3a223b10b938b45af148bc0986de36f1923b"
 dependencies = [
 "proc-macro2",
 "quote",
--- a/Cargo.toml
+++ b/Cargo.toml
@ -20,10 +20,9 @@ serde_json = "1.0.96"
 trust-dns-client = "0.22.0"
 mockall = "0.11.4"
 thiserror = "1.0.40"
-tokio = { version = "1.28.1", features = [ "full", "net" ]}
+tokio = { version = "1.34.0", features = ["full", "net", "signal"] }
 signal-hook = "0.3.15"
 futures = "0.3.28"
-signal-hook-tokio = { version = "0.3.1", features = [ "futures-v0_3" ]}
 clap = { version = "4.2.7", features = ["derive", "env"] }
 handlebars = { version = "4.3.7", features = [ "rust-embed" ]}
 rust-embed = "6.6.1"
@ -49,4 +48,6 @@ gemini = "0.0.5"
 bytes = "1.4.0"

 [patch.crates-io]
+
+# The micropelago fork of tokio-rustls allows for gemini proxying
 tokio-rustls = { git = "https://code.betamike.com/micropelago/tokio-rustls.git", branch = "start-handshake-into-inner" }
--- a/flake.lock
+++ b/flake.lock
@ -1,26 +1,27 @@
 {
  "nodes": {
-    "flake-utils": {
+    "fenix": {
      "inputs": {
-        "systems": "systems"
+        "nixpkgs": "nixpkgs",
+        "rust-analyzer-src": "rust-analyzer-src"
      },
      "locked": {
-        "lastModified": 1681202837,
-        "narHash": "sha256-H+Rh19JDwRtpVPAWp64F+rlEtxUWBAQW28eAi3SRSzg=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "cfacdce06f30d2b68473a46042957675eebb3401",
+        "lastModified": 1699770036,
+        "narHash": "sha256-bZmI7ytPAYLpyFNgj5xirDkKuAniOkj1xHdv5aIJ5GM=",
+        "owner": "nix-community",
+        "repo": "fenix",
+        "rev": "81ab0b4f7ae9ebb57daa0edf119c4891806e4d3a",
        "type": "github"
      },
      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
+        "owner": "nix-community",
+        "repo": "fenix",
        "type": "github"
      }
    },
    "naersk": {
      "inputs": {
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs_2"
      },
      "locked": {
        "lastModified": 1690373729,
@ -38,6 +39,22 @@
      }
    },
    "nixpkgs": {
+      "locked": {
+        "lastModified": 1699099776,
+        "narHash": "sha256-X09iKJ27mGsGambGfkKzqvw5esP1L/Rf8H3u3fCqIiU=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "85f1ba3e51676fa8cc604a3d863d729026a6b8eb",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
      "locked": {
        "lastModified": 1691003216,
        "narHash": "sha256-Qq/MPkhS12Bl0X060pPvX3v9ac3f2rRQfHjjozPh/Qs=",
@ -51,7 +68,7 @@
        "type": "indirect"
      }
    },
-    "nixpkgs_2": {
+    "nixpkgs_3": {
      "locked": {
        "lastModified": 1688392541,
        "narHash": "sha256-lHrKvEkCPTUO+7tPfjIcb7Trk6k31rz18vkyqmkeJfY=",
@ -67,94 +84,27 @@
        "type": "github"
      }
    },
-    "nixpkgs_3": {
-      "locked": {
-        "lastModified": 1681358109,
-        "narHash": "sha256-eKyxW4OohHQx9Urxi7TQlFBTDWII+F+x2hklDOQPB50=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "96ba1c52e54e74c3197f4d43026b3f3d92e83ff9",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
    "root": {
      "inputs": {
+        "fenix": "fenix",
        "naersk": "naersk",
-        "nixpkgs": "nixpkgs_2",
-        "rust-overlay": "rust-overlay",
-        "utils": "utils"
-      }
-    },
-    "rust-overlay": {
-      "inputs": {
-        "flake-utils": "flake-utils",
        "nixpkgs": "nixpkgs_3"
-      },
-      "locked": {
-        "lastModified": 1691029059,
-        "narHash": "sha256-QwVeE9YTgH3LmL7yw2V/hgswL6yorIvYSp4YGI8lZYM=",
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "rev": "99df4908445be37ddb2d332580365fce512a7dcf",
-        "type": "github"
-      },
-      "original": {
-        "owner": "oxalica",
-        "repo": "rust-overlay",
-        "type": "github"
      }
    },
-    "systems": {
+    "rust-analyzer-src": {
+      "flake": false,
      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "lastModified": 1699715108,
+        "narHash": "sha256-yPozsobJU55gj+szgo4Lpcg1lHvGQYAT6Y4MrC80mWE=",
+        "owner": "rust-lang",
+        "repo": "rust-analyzer",
+        "rev": "5fcf5289e726785d20d3aa4d13d90a43ed248e83",
        "type": "github"
      },
      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    },
-    "systems_2": {
-      "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    },
-    "utils": {
-      "inputs": {
-        "systems": "systems_2"
-      },
-      "locked": {
-        "lastModified": 1689068808,
-        "narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
+        "owner": "rust-lang",
+        "ref": "nightly",
+        "repo": "rust-analyzer",
        "type": "github"
      }
    }
--- a/flake.nix
+++ b/flake.nix
@ -1,102 +1,143 @@
 {
  inputs = {
+    fenix.url = "github:nix-community/fenix";
    naersk.url = "github:nix-community/naersk/master";
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.11";
-    utils.url = "github:numtide/flake-utils";
-
-    rust-overlay.url = "github:oxalica/rust-overlay";
  };

-  outputs = { self, nixpkgs, utils, naersk, rust-overlay }:
+  outputs = { self, nixpkgs, naersk, fenix }:
    let
-      buildTargetsBySystem = {
-        "x86_64-linux" = "x86_64-unknown-linux-musl";
-        "i686-linux" = "i686-unknown-linux-musl";
-        "aarch64-linux" = "aarch64-unknown-linux-musl";
+      buildTargets = {
+        "x86_64-linux" = {
+          crossSystemConfig = "x86_64-unknown-linux-musl";
+          rustTarget = "x86_64-unknown-linux-musl";
+        };
+
+        "i686-linux" = {
+          crossSystemConfig = "i686-unknown-linux-musl";
+          rustTarget = "i686-unknown-linux-musl";
+        };
+
+        "aarch64-linux" = {
+          crossSystemConfig = "aarch64-unknown-linux-musl";
+          rustTarget = "aarch64-unknown-linux-musl";
+        };
+
+        "x86_64-windows" = {
+          crossSystemConfig = "x86_64-w64-mingw32";
+          rustTarget = "x86_64-pc-windows-gnu";
+          makeBuildPackageAttrs = pkgsCross: {
+            depsBuildBuild = [
+              pkgsCross.stdenv.cc
+              pkgsCross.windows.pthreads
+            ];
+          };
+        };
      };

-      supportedSystems = builtins.attrNames buildTargetsBySystem;
+      # eachSystem [system] (system: ...)
+      #
+      # Returns an attrset with a key for every system in the given array, with
+      # the key's value being the result of calling the callback with that key.
+      eachSystem = supportedSystems: callback: builtins.foldl'
+        (overall: system: overall // { ${system} = callback system; })
+        {}
+        supportedSystems;

-      eachCrossSystem = callback: (builtins.foldl'
-        (overall: buildSystem: overall // {
-          ${buildSystem} = (builtins.foldl'
-            (inner: hostSystem: inner // {
-              "cross-${hostSystem}" = callback buildSystem hostSystem;
+      # eachCrossSystem [system] (buildSystem: targetSystem: ...)
+      #
+      # Returns an attrset with a key "$buildSystem.cross-$targetSystem" for
+      # every combination of the elements of the array of system strings. The
+      # value of the attrs will be the result of calling the callback with each
+      # combination.
+      #
+      # There will also be keys "$system.default", which are aliases of
+      # "$system.cross-$system" for every system.
+      #
+      eachCrossSystem = supportedSystems: callback:
+        eachSystem supportedSystems (buildSystem: builtins.foldl'
+            (inner: targetSystem: inner // {
+              "cross-${targetSystem}" = callback buildSystem targetSystem;
            })
            { default = callback buildSystem buildSystem; }
            supportedSystems
-          );
-        })
-        {}
-        supportedSystems
-      );
+        );

-      mkPkgs = buildSystem: hostSystem: import nixpkgs ({
+      mkPkgs = buildSystem: targetSystem: import nixpkgs ({
        system = buildSystem;
-        overlays = [
-          (import rust-overlay)
-          (final: prev: {
-            rust-toolchain = prev.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
-          })
-        ];
-      } // (if buildSystem == hostSystem then {} else {
+      } // (if targetSystem == null then {} else {
        # The nixpkgs cache doesn't have any packages where cross-compiling has
        # been enabled, even if the target platform is actually the same as the
        # build platform (and therefore it's not really cross-compiling). So we
        # only set up the cross-compiling config if the target platform is
        # different.
-        crossSystem.config = hostSystem;
+        crossSystem.config = buildTargets.${targetSystem}.crossSystemConfig;
      }));

-      mkRustEnv = crossPkgs: hostSystem: {
-        OPENSSL_STATIC = "1";
-        OPENSSL_LIB_DIR = "${crossPkgs.pkgsStatic.openssl.out}/lib";
-        OPENSSL_INCLUDE_DIR = "${crossPkgs.pkgsStatic.openssl.dev}/include";
-        CARGO_BUILD_TARGET = buildTargetsBySystem.${hostSystem};
-        CARGO_BUILD_RUSTFLAGS = [
-          "-C" "target-feature=+crt-static"
-          "-C" "linker=${crossPkgs.stdenv.cc}/bin/${crossPkgs.stdenv.cc.targetPrefix}cc"
-          "-C" "link-arg=-static"
-        ];
-      };
+    in {
+      packages = eachCrossSystem
+        (builtins.attrNames buildTargets)
+        (buildSystem: targetSystem: let
+          pkgs = mkPkgs buildSystem null;
+          pkgsCross = mkPkgs buildSystem targetSystem;
+          rustTarget = buildTargets.${targetSystem}.rustTarget;

-    in
-    {
-      packages = eachCrossSystem (buildSystem: hostSystem: let
-        pkgs = mkPkgs buildSystem buildSystem;
-        crossPkgs = mkPkgs buildSystem hostSystem;
-        naersk-lib = pkgs.callPackage naersk {
-          cargo = pkgs.rust-toolchain;
-          rustc = pkgs.rust-toolchain;
-        };
-        rustEnv = mkRustEnv crossPkgs hostSystem;
-      in
-        naersk-lib.buildPackage ({
-          src = ./.;
-          doCheck = false;
-          nativeBuildInputs = [ crossPkgs.pkgsStatic.stdenv.cc ];
-        } // rustEnv)
-      );
+          # TODO I'd prefer to use the toolchain file
+          # https://github.com/nix-community/fenix/issues/123
+          #toolchain = fenix.packages.${buildSystem}.fromToolchainFile {
+          #  file = ./rust-toolchain.toml;
+          #  sha256 = "sha256-LU4C/i+maIOqBZagUaXpFyWZyOVfQ3Ah5/JTz7v6CG4=";
+          #};

-      devShells = eachCrossSystem (buildSystem: hostSystem: let
-        pkgs = mkPkgs buildSystem buildSystem;
-        crossPkgs = mkPkgs buildSystem hostSystem;
-        rustEnv = mkRustEnv crossPkgs hostSystem;
-      in
-        pkgs.mkShell ({
-          nativeBuildInputs = [
-            crossPkgs.stdenv.cc
-            crossPkgs.openssl
-            pkgs.nmap # ncat
-            pkgs.rust-toolchain
+          fenixPkgs = fenix.packages.${buildSystem};
+
+          mkToolchain = fenixPkgs: fenixPkgs.toolchainOf {
+            channel = "nightly";
+            date = "2023-07-23";
+            sha256 = "sha256-LU4C/i+maIOqBZagUaXpFyWZyOVfQ3Ah5/JTz7v6CG4=";
+          };
+
+          toolchain = fenixPkgs.combine [
+            (mkToolchain fenixPkgs).rustc
+            (mkToolchain fenixPkgs).cargo
+            (mkToolchain fenixPkgs.targets.${rustTarget}).rust-std
          ];
-          shellHook = ''
-            export CARGO_HOME=$(pwd)/.cargo

-            if [ -f "config.yml" ]; then
-              export DOMANI_CONFIG_PATH=config-dev.yml
-            fi
-          '';
-        } // rustEnv));
+          buildPackageAttrs = if
+            builtins.hasAttr "makeBuildPackageAttrs" buildTargets.${targetSystem}
+          then
+            buildTargets.${targetSystem}.makeBuildPackageAttrs pkgsCross
+          else
+            {};
+
+          naersk-lib = pkgs.callPackage naersk {
+            cargo = toolchain;
+            rustc = toolchain;
+          };
+
+        in
+          naersk-lib.buildPackage (buildPackageAttrs // rec {
+            src = ./.;
+            strictDeps = true;
+            doCheck = false;
+
+            OPENSSL_STATIC = "1";
+            OPENSSL_LIB_DIR = "${pkgsCross.pkgsStatic.openssl.out}/lib";
+            OPENSSL_INCLUDE_DIR = "${pkgsCross.pkgsStatic.openssl.dev}/include";
+
+            # Required because ring crate is special. This also seems to have
+            # fixed some issues with the x86_64-windows cross-compile :shrug:
+            TARGET_CC="${pkgsCross.stdenv.cc}/bin/${pkgsCross.stdenv.cc.targetPrefix}cc";
+
+            CARGO_BUILD_TARGET = rustTarget;
+            CARGO_BUILD_RUSTFLAGS = [
+              "-C" "target-feature=+crt-static"
+              "-C" "link-arg=-static"
+
+              # https://github.com/rust-lang/cargo/issues/4133
+              "-C" "linker=${TARGET_CC}"
+            ];
+          })
+        );
    };
 }
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@ -4,5 +4,6 @@ components = [ "rustfmt", "rustc-dev", "clippy", "cargo" ]
 targets = [
    "x86_64-unknown-linux-musl",
    "i686-unknown-linux-musl",
-    "aarch64-unknown-linux-musl"
+    "aarch64-unknown-linux-musl",
+    "x86_64-pc-windows-gnu"
 ]
--- a/src/main.rs
+++ b/src/main.rs
@ -1,9 +1,6 @@
 #![feature(trait_upcasting)]

 use clap::Parser;
-use futures::stream::StreamExt;
-use signal_hook_tokio::Signals;
-
 use std::path;

 #[derive(Parser, Debug)]
@ -195,18 +192,18 @@ async fn main() {
        );
    }

-    let mut signals =
-        Signals::new(signal_hook::consts::TERM_SIGNALS).expect("initializing signals failed");
+    tokio::signal::ctrl_c()
+        .await
+        .expect("failed to listen for kill signal");

-    if (signals.next().await).is_some() {
-        log::info!("Gracefully shutting down...");
-    }
+    log::info!("Gracefully shutting down...");

    tokio::spawn(async move {
-        if (signals.next().await).is_some() {
-            log::warn!("Forcefully shutting down");
-            std::process::exit(1);
-        };
+        tokio::signal::ctrl_c()
+            .await
+            .expect("failed to listen for kill signal");
+        log::warn!("Forcefully shutting down");
+        std::process::exit(1);
    });

    task_stack