ocaml template

ocaml/.envrc

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+use flake

ocaml/.gitignore

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+.direnv
+my_project.opam
+_build/
+result

ocaml/bin/dune

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+(executable
+ (public_name my_project)
+ (name main)
+ (libraries my_project base64))

ocaml/bin/main.ml

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+let () = let open Base64 in
+  print_endline (decode_exn "bWphdSEh")

ocaml/dune-project

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+(lang dune 3.11)
+
+(name my_project)
+
+(generate_opam_files true)
+
+(source
+ (github username/reponame))
+
+(authors "Author Name")
+
+(maintainers "Maintainer Name")
+
+(license LICENSE)
+
+(documentation https://url/to/documentation)
+
+(package
+ (name my_project)
+ (synopsis "A short synopsis")
+ (description "A longer description")
+ (depends ocaml dune base64)
+ (tags
+  (topics "to describe" your project)))
+
+; See the complete stanza docs at https://dune.readthedocs.io/en/stable/dune-files.html#dune-project

ocaml/flake.lock

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+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1707091808,
+        "narHash": "sha256-LahKBAfGbY836gtpVNnWwBTIzN7yf/uYM/S0g393r0Y=",
+        "path": "/nix/store/ws5098bfhd2kzvg3yxwb2ggvl05h7gfd-source",
+        "rev": "9f2ee8c91ac42da3ae6c6a1d21555f283458247e",
+        "type": "path"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "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",
+  "version": 7
+}

ocaml/flake.nix

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+{
+  description = "A bare minimum OCaml flake";
+
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (sys:
+      let pkgs = import nixpkgs { system = sys; };
+          opkgs = pkgs.ocamlPackages; # pkgs.ocaml-ng.ocamlPackages_VERSION
+          project = opkgs.buildDunePackage {
+            pname = "my_project";
+            version = "0.1.0";
+
+            src = ./.;
+
+            buildInputs = with opkgs; [
+              base64
+            ];
+          };
+      in {
+        packages.default = project;
+        devShells.default = pkgs.mkShell {
+          packages = [ opkgs.utop ];
+          inputsFrom = [ project ];
+        };
+      }
+    );
+}

ocaml/lib/dune

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+(library
+ (name my_project))

ocaml/test/dune

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+(test
+ (name my_project))