Use TOML serializer from nixpkgs

Closes #263

build.nix

@@ -62,6 +62,7 @@
 , writeText
 , runCommandLocal
 , remarshal
+, formats
 , crateDependencies
 , zstd
 , fetchurl
@@ -72,7 +73,7 @@
 let
   builtinz =
     builtins // import ./builtins
-      { inherit lib writeText remarshal runCommandLocal; };
+      { inherit lib writeText remarshal runCommandLocal formats; };
 
   drvAttrs = {
     name = "${pname}-${version}";
@@ -87,7 +88,7 @@ let
 
     # The cargo config with source replacement. Replaces both crates.io crates
     # and git dependencies.
-    cargoconfig = builtinz.toTOML {
+    cargoconfig = builtinz.writeTOML "config" {
       source = {
         crates-io = { replace-with = "nix-sources"; };
         nix-sources = {
@@ -235,7 +236,7 @@ let
       export CARGO_HOME=''${CARGO_HOME:-$PWD/.cargo-home}
       mkdir -p $CARGO_HOME
 
-      echo "$cargoconfig" > $CARGO_HOME/config
+      cp "$cargoconfig" $CARGO_HOME/config
 
       runHook postConfigure
     '';

builtins/default.nix

@@ -3,12 +3,12 @@
 , writeText
 , runCommandLocal
 , remarshal
+, formats
 }:
 
 rec
 {
-  toTOML = import ./to-toml.nix { inherit lib; };
-  writeTOML = name: attrs: writeText name (toTOML attrs);
+  writeTOML = (formats.toml { }).generate;
 
   readTOML = usePure: f:
     if usePure then

default.nix

@@ -5,6 +5,7 @@
 , lib
 , lndir
 , remarshal
+, formats
 , rsync
 , runCommandLocal
 , rustc
@@ -15,10 +16,10 @@
 }@defaultBuildAttrs:
 
 let
-  libb = import ./lib.nix { inherit lib writeText runCommandLocal remarshal; };
+  libb = import ./lib.nix { inherit lib writeText runCommandLocal remarshal formats; };
 
   builtinz = builtins // import ./builtins
-    { inherit lib writeText remarshal runCommandLocal; };
+    { inherit lib writeText remarshal runCommandLocal formats; };
 
   mkConfig = arg:
     import ./config.nix { inherit lib arg libb builtinz; };

lib.nix

@@ -1,8 +1,8 @@
-{ lib, writeText, runCommandLocal, remarshal }:
+{ lib, writeText, runCommandLocal, remarshal, formats }:
 let
   builtinz =
     builtins // import ./builtins
-      { inherit lib writeText remarshal runCommandLocal; };
+      { inherit lib writeText remarshal runCommandLocal formats; };
 in
 rec
 {
@@ -121,14 +121,13 @@ rec
 
   # A very minimal 'src' which makes cargo happy nonetheless
   dummySrc =
-    { cargoconfig # string
+    { cargoconfig # path
     , cargotomls # list
     , cargolock # attrset
     , copySources # list of paths that should be copied to the output
     , copySourcesFrom # path from which to copy ${copySources}
     }:
       let
-        config = writeText "config" cargoconfig;
         cargolock' = builtinz.writeTOML "Cargo.lock" cargolock;
 
         fixupCargoToml = cargotoml:
@@ -154,7 +153,7 @@ rec
           { inherit copySources copySourcesFrom cargotomlss; }
           ''
             mkdir -p $out/.cargo
-            ${lib.optionalString (! isNull cargoconfig) "cp ${config} $out/.cargo/config"}
+            ${lib.optionalString (! isNull cargoconfig) "cp ${cargoconfig} $out/.cargo/config"}
             cp ${cargolock'} $out/Cargo.lock
 
             for tuple in $cargotomlss; do

nix/sources.json

@@ -1,14 +1,14 @@
 {
     "agent-rs": {
-        "branch": "paulliu/add-cargo-lock",
+        "branch": "main",
         "description": "A collection of libraries and tools for building software around the Internet Computer, in Rust.",
-        "homepage": "https://sdk.dfinity.org/",
-        "owner": "ninegua",
+        "homepage": "",
+        "owner": "dfinity",
         "repo": "agent-rs",
-        "rev": "4a22e590516bc79ec3c75a320f7941e7762ea098",
-        "sha256": "0sacddc34nlfgldqghlwchgzjki177h5dsgpmdv70cm8hfy0sg7l",
+        "rev": "6d923cbc918852ef5bfaeb08e63c86580aa80ffe",
+        "sha256": "12y28nmv9af8sj55s998wydy08h32gvxr9dbhfxhfilxdairh0a2",
         "type": "tarball",
-        "url": "https://github.com/ninegua/agent-rs/archive/4a22e590516bc79ec3c75a320f7941e7762ea098.tar.gz",
+        "url": "https://github.com/dfinity/agent-rs/archive/6d923cbc918852ef5bfaeb08e63c86580aa80ffe.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "fenix": {
@@ -65,10 +65,10 @@
         "homepage": null,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "6c2318e451fc0eaf338fb461d9bfcc99869de758",
-        "sha256": "1djwkvjnn26v0xw1swwh7dgmi0yl0b1kb8kansrdwk0jhhqbl7zq",
+        "rev": "1df733d83081fe79c109b066c90badece6b8d8b1",
+        "sha256": "1m3s4xv35jilrmbv8hj9gzpbcqgb8vb0iqhzcm1261x8b1hiylvj",
         "type": "tarball",
-        "url": "https://github.com/NixOS/nixpkgs/archive/6c2318e451fc0eaf338fb461d9bfcc99869de758.tar.gz",
+        "url": "https://github.com/NixOS/nixpkgs/archive/1df733d83081fe79c109b066c90badece6b8d8b1.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "nixpkgs-21.05": {
@@ -119,6 +119,18 @@
         "url": "https://github.com/nushell/nushell/archive/85bfdca578157072e51e6972d370cfe63b0fda77.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
+    "probe-rs": {
+        "branch": "master",
+        "description": "A debugging toolset and library for debugging embedded ARM and RISC-V targets on a separate host",
+        "homepage": "https://probe.rs",
+        "owner": "probe-rs",
+        "repo": "probe-rs",
+        "rev": "51fa324aef9f7c413988a3d18052b1bbc278a4c5",
+        "sha256": "0zb9s80hsz83ngjngs9cllp7gf8xq9jz0m3lwdhf08x3cp3bj6fd",
+        "type": "tarball",
+        "url": "https://github.com/probe-rs/probe-rs/archive/51fa324aef9f7c413988a3d18052b1bbc278a4c5.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
     "ripgrep-all": {
         "branch": "master",
         "description": "rga: ripgrep, but also search in PDFs, E-Books, Office documents, zip, tar.gz, etc.",

test/default.nix

@@ -2,9 +2,25 @@
 let
   sources = import ../nix/sources.nix;
 
-  pkgs = import ../nix {
-    inherit system nixpkgs;
-  };
+  pkgs =
+    let
+      pkgs' = import ../nix {
+        inherit system nixpkgs;
+      };
+
+      older-pkgs = import ../nix {
+        inherit system;
+
+        nixpkgs = "nixpkgs-21.05";
+      };
+
+    in
+    pkgs' // {
+      # Some of our tests use dynamically-built Git repositories that fail extra
+      # security checks introduced in newer Git versions - so for the time being
+      # let's pin our test-Git to an older version.
+      git = older-pkgs.git;
+    };
 
   naersk = pkgs.callPackage ../default.nix {
     inherit (pkgs.rustPackages) cargo rustc;

test/slow/default.nix

@@ -2,6 +2,7 @@ args: {
   agent-rs = import ./agent-rs args;
   lorri = import ./lorri args;
   nushell = import ./nushell args;
+  probe-rs = import ./probe-rs args;
   ripgrep-all = import ./ripgrep-all args;
   rustlings = import ./rustlings args;
   talent-plan = import ./talent-plan args;

test/slow/probe-rs/default.nix

@@ -0,0 +1,33 @@
+{ sources, pkgs, ... }:
+let
+  fenix = import sources.fenix { };
+
+  toolchain = (fenix.toolchainOf {
+    channel = "nightly";
+    date = "2023-07-01";
+    sha256 = "sha256-pWd4tAHP4QWGC3CKWZzDjzYANxATC6CGRmKuP2ZZv5k=";
+  }).toolchain;
+
+  naersk = pkgs.callPackage ../../../default.nix {
+    cargo = toolchain;
+    rustc = toolchain;
+  };
+
+  app = naersk.buildPackage {
+    src = sources.probe-rs;
+
+    buildInputs = with pkgs; [
+      pkg-config
+      libusb1
+      openssl
+    ] ++ lib.optionals stdenv.isDarwin [
+      darwin.DarwinTools
+      darwin.apple_sdk.frameworks.AppKit
+    ];
+  };
+
+in
+pkgs.runCommand "probe-rs-test"
+{
+  buildInputs = [ app ];
+} "rtthost --help && touch $out"