Restore Nix devShell support (#2890)

* nix: Avoid Linux only packages on macOS

* nix: Update flake inputs to get new compiler

In particular, updating nixpkgs & rust-overlay gets us Rust 1.80.1

* Fix partialeq for coroutine

* add a comment about manual implementation of traits for coroutine

---------

Co-authored-by: Evan Almloff <evanalmloff@gmail.com>

flake.lock

@@ -5,11 +5,11 @@
         "nixpkgs-lib": "nixpkgs-lib"
       },
       "locked": {
-        "lastModified": 1709336216,
-        "narHash": "sha256-Dt/wOWeW6Sqm11Yh+2+t0dfEWxoMxGBvv3JpIocFl9E=",
+        "lastModified": 1722555600,
+        "narHash": "sha256-XOQkdLafnb/p9ij77byFQjDf5m5QYl9b2REiVClC+x4=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "f7b3c975cf067e56e7cda6cb098ebe3fb4d74ca2",
+        "rev": "8471fe90ad337a8074e957b69ca4d0089218391d",
         "type": "github"
       },
       "original": {
@@ -18,31 +18,13 @@
         "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": 1711231723,
-        "narHash": "sha256-dARJQ8AJOv6U+sdRePkbcVyVbXJTi1tReCrkkOeusiA=",
+        "lastModified": 1724395761,
+        "narHash": "sha256-zRkDV/nbrnp3Y8oCADf5ETl1sDrdmAW6/bBVJ8EbIdQ=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "e1d501922fd7351da4200e1275dfcf5faaad1220",
+        "rev": "ae815cee91b417be55d43781eb4b73ae1ecc396c",
         "type": "github"
       },
       "original": {
@@ -54,29 +36,23 @@
     },
     "nixpkgs-lib": {
       "locked": {
-        "dir": "lib",
-        "lastModified": 1709237383,
-        "narHash": "sha256-cy6ArO4k5qTx+l5o+0mL9f5fa86tYUX3ozE1S+Txlds=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "1536926ef5621b09bba54035ae2bb6d806d72ac8",
-        "type": "github"
+        "lastModified": 1722555339,
+        "narHash": "sha256-uFf2QeW7eAHlYXuDktm9c25OxOyCoUOQmh5SZ9amE5Q=",
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/a5d394176e64ab29c852d03346c1fc9b0b7d33eb.tar.gz"
       },
       "original": {
-        "dir": "lib",
-        "owner": "NixOS",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/a5d394176e64ab29c852d03346c1fc9b0b7d33eb.tar.gz"
       }
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1706487304,
-        "narHash": "sha256-LE8lVX28MV2jWJsidW13D2qrHU/RUUONendL2Q/WlJg=",
+        "lastModified": 1718428119,
+        "narHash": "sha256-WdWDpNaq6u1IPtxtYHHWpl5BmabtpmLnMAx0RdJ/vo8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "90f456026d284c22b3e3497be980b2e47d0b28ac",
+        "rev": "e6cea36f83499eb4e9cd184c8a8e823296b50ad5",
         "type": "github"
       },
       "original": {
@@ -91,20 +67,19 @@
         "flake-parts": "flake-parts",
         "nixpkgs": "nixpkgs",
         "rust-overlay": "rust-overlay",
-        "systems": "systems_2"
+        "systems": "systems"
       }
     },
     "rust-overlay": {
       "inputs": {
-        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs_2"
       },
       "locked": {
-        "lastModified": 1711246447,
-        "narHash": "sha256-g9TOluObcOEKewFo2fR4cn51Y/jSKhRRo4QZckHLop0=",
+        "lastModified": 1724638882,
+        "narHash": "sha256-ap2jIQi/FuUHR6HCht6ASWhoz8EiB99XmI8Esot38VE=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "dcc802a6ec4e9cc6a1c8c393327f0c42666f22e4",
+        "rev": "19b70f147b9c67a759e35824b241f1ed92e46694",
         "type": "github"
       },
       "original": {
@@ -127,21 +102,6 @@
         "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"
-      }
     }
   },
   "root": "root",

flake.nix

@@ -26,6 +26,7 @@
             pkgs.openssl
             pkgs.libiconv
             pkgs.pkg-config
+          ] ++ lib.optionals pkgs.stdenv.isLinux [
             pkgs.glib
             pkgs.gtk3
             pkgs.libsoup_3