Figured out patchelf hack for nixos users

CONTRIBUTING.md

@@ -36,6 +36,15 @@ You need `yarn`.
 
 TODO: fill this out based on all the different packages scripts once they cool down. 
 
+## If you're on NixOS
+
+You'll need to run a command like this in order to get `yarn build` to run, especially in `packages/squiggle-lang`. 
+```sh
+patchelf --set-interpreter $(patchelf --print-interpreter $(which mkdir)) ./node_modules/gentype/gentype.exe 
+```
+
+See [here](https://github.com/NixOS/nixpkgs/issues/107375)
+
 # Pull request protocol
 
 Please work against `staging` branch. **Do not** work against `master`. Please do not merge without approval from some subset of Quinn, Sam, and Ozzie; they will be auto-pinged. 

flake.nix

@@ -44,6 +44,7 @@
               yarn2nix
               nodePackages.npm
               nodejs
+              patchelf
               (pkgs.vscode-with-extensions.override {
                   vscode = pkgs.vscodium;
                   vscodeExtensions = pkgs.vscode-utils.extensionsFromVscodeMarketplace [

packages/squiggle-lang/__tests__/Symbolic_test.res

@@ -0,0 +1,23 @@
+open Jest
+open Expect
+open Js.Array
+open SymbolicDist
+open E.Sp
+
+let makeTest = (~only=false, str, item1, item2) =>
+  only
+    ? Only.test(str, () => expect(item1) -> toEqual(item2))
+    : test(str, () => expect(item1) -> toEqual(item2))
+
+let normalParams1: SymbolicDistTypes.normal = {mean: 5.0, stdev: 2.0}
+let normalParams2: SymbolicDistTypes.normal = {mean: 10.0, stdev: 2.0}
+let normalParams3: SymbolicDistTypes.normal = {mean: 20.0, stdev: 2.0}
+let range20 = [0.0,1.0,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,11.0,12.0,13.0,14.0,15.0,16.0,17.0,18.0,19.0,20.0]
+let forSparkline = (thisPdf, inps) => map(thisPdf, inps)
+
+describe("normal combine", () => {
+  let pdf1 = x => Normal.pdf(x, normalParams1)
+  let forSparkline1 = forSparkline(pdf1, range20)
+  let x = forSparkline1 -> toString -> sparkly -> Js.Console.log
+  makeTest("Spark1", 1, 0)
+})

packages/squiggle-lang/package.json

@@ -24,7 +24,8 @@
     "mathjs": "10.4.1",
     "pdfast": "^0.2.0",
     "rationale": "0.2.0",
-    "rescript": "^9.1.4"
+    "rescript": "^9.1.4",
+    "sparkly": "6.0.0"
   },
   "devDependencies": {
     "@glennsl/rescript-jest": "^0.9.0",

packages/squiggle-lang/src/rescript/utility/E.res

@@ -441,3 +441,7 @@ module JsArray = {
     |> Js.Array.map(Rationale.Option.toExn("Warning: This should not have happened"))
   let filter = Js.Array.filter
 }
+
+module Sp = {
+  @module("sparkly") @scope("sparkly") external sparkly: string => string = "sparkly"
+}