From e0f9192d43a870b52fdb04a313d928fb22ee0ba7 Mon Sep 17 00:00:00 2001
From: Akshay <nerdy@peppe.rs>
Date: Mon, 16 Sep 2024 22:17:46 +0100
Subject: add derivation to build tbsp

---
 flake.nix | 102 +++++++++++++++++++++++++++++++++++---------------------------
 1 file changed, 58 insertions(+), 44 deletions(-)

diff --git a/flake.nix b/flake.nix
index 4f69fe8..50f9efc 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,6 +1,5 @@
 {
   inputs = {
-
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
 
     gitignore = {
@@ -9,55 +8,70 @@
     };
 
     rust-overlay = {
-        url = "github:oxalica/rust-overlay";
-        inputs.nixpkgs.follows = "nixpkgs";
+      url = "github:oxalica/rust-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
     };
-
   };
 
-  outputs =
-    { self
-    , nixpkgs
-    , gitignore
-    , rust-overlay
-    }:
-    let
-      inherit (gitignore.lib) gitignoreSource;
-
-      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
-      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
-      nixpkgsFor = forAllSystems (system:
+  outputs = {
+    self,
+    nixpkgs,
+    gitignore,
+    rust-overlay,
+  }: let
+    inherit (gitignore.lib) gitignoreSource;
+
+    supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"];
+    forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+    nixpkgsFor = forAllSystems (system:
       import nixpkgs {
-          inherit system; 
-          overlays = [rust-overlay.overlays.default];
+        inherit system;
+        overlays = [rust-overlay.overlays.default self.overlays.default];
       });
+  in {
+    overlays.default = final: prev: {
+      tbsp = with final; let
+        pname = "tbsp";
+        packageMeta = (lib.importTOML ./Cargo.toml).package;
+        rustPlatform = makeRustPlatform {
+          inherit (final) cargo rustc;
+        };
+      in
+        rustPlatform.buildRustPackage {
+          inherit pname;
+          inherit (packageMeta) version;
 
-    in
-    {
-
-      devShell = forAllSystems (system:
-        let
-          pkgs = nixpkgsFor."${system}";
-        in
-        pkgs.mkShell {
-          nativeBuildInputs = [
-            pkgs.cargo-watch
-            pkgs.bacon
-            pkgs.rustfmt
-            pkgs.cargo
-
-            pkgs.rust-bin.nightly.latest.default
-            pkgs.rust-bin.nightly.latest.rust-analyzer
-            pkgs.lld
-            pkgs.trunk
-
-
-            pkgs.mermaid-cli
-          ];
-          RUST_LOG = "info";
-          RUST_BACKTRACE = 1;
-        });
+          src = self;
+          cargoLock.lockFile = ./Cargo.lock;
+
+          meta = with lib; {
+            description = "tree-based source processing language";
+            homepage = "https://git.peppe.rs/languages/tbsp/about";
+            license = licenses.mit;
+          };
+        };
     };
-}
 
+    defaultPackage = forAllSystems (system: nixpkgsFor."${system}".tbsp);
+    formatter = forAllSystems (system: nixpkgsFor."${system}".alejandra);
 
+    devShell = forAllSystems (system: let
+      pkgs = nixpkgsFor."${system}";
+    in
+      pkgs.mkShell {
+        nativeBuildInputs = [
+          pkgs.cargo-watch
+          pkgs.bacon
+          pkgs.rustfmt
+          pkgs.cargo
+
+          pkgs.rust-bin.nightly.latest.default
+          pkgs.rust-bin.nightly.latest.rust-analyzer
+
+          pkgs.mermaid-cli
+        ];
+        RUST_LOG = "info";
+        RUST_BACKTRACE = 1;
+      });
+  };
+}
-- 
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