feat: project 1

project1/default.nix

@@ -0,0 +1,23 @@
+let
+  basicC = subdir: name: { stdenv }:
+    stdenv.mkDerivation {
+      inherit name;
+      src = ./.;
+      buildPhase = ''
+        runHook preBuild
+        gcc ${subdir}/${name}.c -o ${name}.bin
+        runHook postBuild
+      '';
+      installPhase = ''
+        runHook preInstall
+        mkdir -p $out/bin
+        install ${name}.bin $out/bin/${name}
+        runHook postInstall
+      '';
+    };
+in {
+  p1-phase1 = basicC "phase1" "phase1";
+  p1-phase2 = basicC "phase2" "phase2";
+  p1-phase3 = basicC "phase3" "phase3";
+  p1-phase4 = basicC "phase4" "phase4";
+}