Add spago

.gitignore

@@ -6,3 +6,5 @@
 /examples/abcplayer/
 /.psc*
 /.psa*
+/.purs-repl
+/.spago/

packages.dhall

@@ -0,0 +1,111 @@
+{-
+Welcome to your new Dhall package-set!
+
+Below are instructions for how to edit this file for most use
+cases, so that you don't need to know Dhall to use it.
+
+## Warning: Don't Move This Top-Level Comment!
+
+Due to how `dhall format` currently works, this comment's
+instructions cannot appear near corresponding sections below
+because `dhall format` will delete the comment. However,
+it will not delete a top-level comment like this one.
+
+## Use Cases
+
+Most will want to do one or both of these options:
+1. Override/Patch a package's dependency
+2. Add a package not already in the default package set
+
+This file will continue to work whether you use one or both options.
+Instructions for each option are explained below.
+
+### Overriding/Patching a package
+
+Purpose:
+- Change a package's dependency to a newer/older release than the
+    default package set's release
+- Use your own modified version of some dependency that may
+    include new API, changed API, removed API by
+    using your custom git repo of the library rather than
+    the package set's repo
+
+Syntax:
+where `entityName` is one of the following:
+- dependencies
+- repo
+- version
+-------------------------------
+let upstream = --
+in  upstream
+  with packageName.entityName = "new value"
+-------------------------------
+
+Example:
+-------------------------------
+let upstream = --
+in  upstream
+  with halogen.version = "master"
+  with halogen.repo = "https://example.com/path/to/git/repo.git"
+
+  with halogen-vdom.version = "v4.0.0"
+-------------------------------
+
+### Additions
+
+Purpose:
+- Add packages that aren't already included in the default package set
+
+Syntax:
+where `<version>` is:
+- a tag (i.e. "v4.0.0")
+- a branch (i.e. "master")
+- commit hash (i.e. "701f3e44aafb1a6459281714858fadf2c4c2a977")
+-------------------------------
+let upstream = --
+in  upstream
+  with new-package-name =
+    { dependencies =
+       [ "dependency1"
+       , "dependency2"
+       ]
+    , repo =
+       "https://example.com/path/to/git/repo.git"
+    , version =
+        "<version>"
+    }
+-------------------------------
+
+Example:
+-------------------------------
+let upstream = --
+in  upstream
+  with benchotron =
+      { dependencies =
+          [ "arrays"
+          , "exists"
+          , "profunctor"
+          , "strings"
+          , "quickcheck"
+          , "lcg"
+          , "transformers"
+          , "foldable-traversable"
+          , "exceptions"
+          , "node-fs"
+          , "node-buffer"
+          , "node-readline"
+          , "datetime"
+          , "now"
+          ]
+      , repo =
+          "https://github.com/hdgarrood/purescript-benchotron.git"
+      , version =
+          "v7.0.0"
+      }
+-------------------------------
+-}
+
+let upstream =
+      https://github.com/purescript/package-sets/releases/download/psc-0.13.8-20201021/packages.dhall sha256:55ebdbda1bd6ede4d5307fbc1ef19988c80271b4225d833c8d6fb9b6fb1aa6d8
+
+in  upstream

spago.dhall

@@ -0,0 +1,25 @@
+{-
+Welcome to a Spago project!
+You can edit this file as you like.
+-}
+{ name = "midi"
+, dependencies =
+  [ "assert"
+  , "console"
+  , "effect"
+  , "generics-rep"
+  , "integers"
+  , "lists"
+  , "node-buffer"
+  , "node-fs-aff"
+  , "prelude"
+  , "psci-support"
+  , "quickcheck"
+  , "signal"
+  , "string-parsers"
+  , "test-unit"
+  , "unicode"
+  ]
+, packages = ./packages.dhall
+, sources = [ "src/**/*.purs", "test/**/*.purs" ]
+}