diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 6dc8b51ad..4291ae3b9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,7 +15,7 @@ jobs:
         include:
           - os: ubuntu-latest
           - os: macOS-latest
-          # - os: windows-latest
+          - os: windows-latest
     steps:
       # We set LF endings so that the Windows environment is consistent with the rest
       # See here for context: https://github.com/actions/checkout/issues/135
@@ -52,8 +52,8 @@ jobs:
             ${{ runner.os }}-build-
             ${{ runner.os }}-
 
-      - name: Setup PureScript dependencies
-        run: npm i --global purescript@0.15.10 spago@0.93.11 purs-tidy@latest esbuild@latest
+      - name: Install global NPM packages
+        run: npm i --global purescript@0.15.10 spago@next purs-tidy@latest esbuild@latest
 
       - name: Cache PureScript dependencies
         uses: actions/cache@v2
@@ -64,13 +64,16 @@ jobs:
             output
 
       - name: Install NPM dependencies
-        run: npm install
+        run: npm ci
 
       - name: Install PureScript dependencies
         run: spago install
 
-      - name: Build executable
-        run: spago bundle -p spago-bin
+      - name: Build the project
+        run: spago build
+
+      - name: Bootstrap executable
+        run: ./bin/index.dev.js -p spago-bin
 
       - name: Run tests
         run: spago test
diff --git a/bin/spago.yaml b/bin/spago.yaml
index 1a40e07a6..30781e96d 100644
--- a/bin/spago.yaml
+++ b/bin/spago.yaml
@@ -1,7 +1,7 @@
 package:
   name: spago-bin
   publish:
-    version: 0.93.11
+    version: 0.93.13
     license: BSD-3-Clause
   dependencies:
     - aff
diff --git a/package-lock.json b/package-lock.json
index b3ec18d8c..795987d09 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "spago",
-  "version": "0.93.11",
+  "version": "0.93.13",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "spago",
-      "version": "0.93.11",
+      "version": "0.93.13",
       "license": "BSD-3-Clause",
       "dependencies": {
         "env-paths": "^3.0.0",
diff --git a/package.json b/package.json
index dc215354a..fedb99c8f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "spago",
-  "version": "0.93.11",
+  "version": "0.93.13",
   "license": "BSD-3-Clause",
   "description": "🍝 PureScript package manager and build tool",
   "keywords": [
diff --git a/spago.lock b/spago.lock
index 478461c9a..909cfb5aa 100644
--- a/spago.lock
+++ b/spago.lock
@@ -106,11 +106,11 @@ workspace:
   extra_packages:
     registry-foreign:
       git: https://github.com/purescript/registry-dev.git
-      ref: 7e1f67d1205d68d7f22d9d55d25ba2354dfbb14e
+      ref: 6a803c37577af368caa221a2a06d6be2079d32da
       subdir: foreign
     registry-lib:
       git: https://github.com/purescript/registry-dev.git
-      ref: 7e1f67d1205d68d7f22d9d55d25ba2354dfbb14e
+      ref: 6a803c37577af368caa221a2a06d6be2079d32da
       subdir: lib
 packages:
   aff:
@@ -469,6 +469,52 @@ packages:
     integrity: sha256-A0JQHpTfo1dNOj9U5/Fd3xndlRSE0g2IQWOGor2yXn8=
     dependencies:
       - unsafe-coerce
+  fetch:
+    type: registry
+    version: 1.1.4
+    integrity: sha256-Tmt60rjS4PNtKMVGpo8O6W1Fdhcu3a3CvyN/x+SwXEs=
+    dependencies:
+      - aff
+      - aff-promise
+      - arraybuffer-types
+      - effect
+      - fetch-core
+      - foreign
+      - http-methods
+      - newtype
+      - prelude
+      - record
+      - typelevel-prelude
+      - unsafe-coerce
+      - web-file
+      - web-promise
+      - web-streams
+  fetch-core:
+    type: registry
+    version: 4.0.4
+    integrity: sha256-lS4yhvznII/vg37LewU/Ubeoj6OpxED2kb5/yn58YQQ=
+    dependencies:
+      - arraybuffer-types
+      - arrays
+      - console
+      - effect
+      - foldable-traversable
+      - foreign
+      - foreign-object
+      - functions
+      - http-methods
+      - maybe
+      - newtype
+      - nullable
+      - prelude
+      - record
+      - tuples
+      - typelevel-prelude
+      - unfoldable
+      - unsafe-coerce
+      - web-file
+      - web-promise
+      - web-streams
   filterable:
     type: registry
     version: 5.0.0
@@ -1175,7 +1221,7 @@ packages:
   registry-foreign:
     type: git
     url: https://github.com/purescript/registry-dev.git
-    rev: 7e1f67d1205d68d7f22d9d55d25ba2354dfbb14e
+    rev: 6a803c37577af368caa221a2a06d6be2079d32da
     subdir: foreign
     dependencies:
       - aff
@@ -1189,6 +1235,7 @@ packages:
       - datetime
       - effect
       - either
+      - fetch
       - filterable
       - foldable-traversable
       - foreign-object
@@ -1212,7 +1259,7 @@ packages:
   registry-lib:
     type: git
     url: https://github.com/purescript/registry-dev.git
-    rev: 7e1f67d1205d68d7f22d9d55d25ba2354dfbb14e
+    rev: 6a803c37577af368caa221a2a06d6be2079d32da
     subdir: lib
     dependencies:
       - aff
@@ -1468,6 +1515,17 @@ packages:
       - web-dom
       - web-file
       - web-storage
+  web-promise:
+    type: registry
+    version: 3.1.0
+    integrity: sha256-YfqJyEC3bHH6D8QgTi0ME5oJmGYOuZ2TlcyOdpG8dIE=
+    dependencies:
+      - effect
+      - exceptions
+      - foldable-traversable
+      - functions
+      - maybe
+      - prelude
   web-storage:
     type: registry
     version: 5.0.0
@@ -1475,6 +1533,18 @@ packages:
     dependencies:
       - nullable
       - web-events
+  web-streams:
+    type: registry
+    version: 3.0.0
+    integrity: sha256-+QELAR7lb08Ebr4lCntxeGk5Z1i+NInDJwzEzz3Pigc=
+    dependencies:
+      - arraybuffer-types
+      - effect
+      - exceptions
+      - nullable
+      - prelude
+      - tuples
+      - web-promise
   web-xhr:
     type: registry
     version: 5.0.1
diff --git a/spago.yaml b/spago.yaml
index e24b1e9ed..bb1a25d0e 100644
--- a/spago.yaml
+++ b/spago.yaml
@@ -1,7 +1,7 @@
 package:
   name: spago
   publish:
-    version: 0.93.11
+    version: 0.93.13
     license: BSD-3-Clause
     location:
       githubOwner: purescript
@@ -58,9 +58,9 @@ workspace:
   extra_packages:
     registry-lib:
       git: https://github.com/purescript/registry-dev.git
-      ref: 7e1f67d1205d68d7f22d9d55d25ba2354dfbb14e
+      ref: 6a803c37577af368caa221a2a06d6be2079d32da
       subdir: lib
     registry-foreign:
       git: https://github.com/purescript/registry-dev.git
-      ref: 7e1f67d1205d68d7f22d9d55d25ba2354dfbb14e
+      ref: 6a803c37577af368caa221a2a06d6be2079d32da
       subdir: foreign
diff --git a/src/Spago/Cmd.purs b/src/Spago/Cmd.purs
index 87b003954..94461a09c 100644
--- a/src/Spago/Cmd.purs
+++ b/src/Spago/Cmd.purs
@@ -3,12 +3,13 @@ module Spago.Cmd where
 import Spago.Prelude
 
 import Data.Array as Array
-import Data.Nullable (Nullable)
 import Data.String (Pattern(..))
 import Data.String as String
+import Data.Time.Duration (Milliseconds(..))
 import Node.Library.Execa as Execa
+import Node.Platform as Platform
+import Node.Process as Process
 import Partial.Unsafe (unsafeCrashWith)
-import Data.Time.Duration (Milliseconds(..))
 
 data StdinConfig
   = StdinPipeParent
@@ -97,3 +98,32 @@ findFlag { flags, args } = case Array.uncons args of
           _ -> Nothing
         _ -> Just h1
       _ -> Nothing
+
+getExecutable :: forall a. String -> Spago (LogEnv a) { cmd :: String, output :: String }
+getExecutable command =
+  case Process.platform of
+    Just Platform.Win32 -> do
+      -- On Windows, we often need to call the `.cmd` version
+      let cmd1 = mkCmd command (Just "cmd")
+      askVersion cmd1 >>= case _ of
+        Right r -> pure { cmd: cmd1, output: r.stdout }
+        Left err' -> do
+          let cmd2 = mkCmd command Nothing
+          logDebug [ "Failed to find purs.cmd. Trying with just purs...", show err' ]
+          askVersion cmd2 >>= case _ of
+            Right r -> pure { cmd: cmd2, output: r.stdout }
+            Left err -> complain err
+    _ -> do
+      -- On other platforms, we just call `purs`
+      let cmd1 = mkCmd command Nothing
+      askVersion cmd1 >>= case _ of
+        Right r -> pure { cmd: cmd1, output: r.stdout }
+        Left err -> complain err
+  where
+  askVersion cmd = exec cmd [ "--version" ] defaultExecOptions { pipeStdout = false, pipeStderr = false }
+
+  mkCmd cmd maybeExtension = cmd <> maybe "" (append ".") maybeExtension
+
+  complain err = do
+    logDebug $ show err
+    die [ "Failed to find " <> command <> ". Have you installed it, and is it in your PATH?" ]
diff --git a/src/Spago/Command/Bundle.purs b/src/Spago/Command/Bundle.purs
index c2b51aca6..bf415cde9 100644
--- a/src/Spago/Command/Bundle.purs
+++ b/src/Spago/Command/Bundle.purs
@@ -54,9 +54,7 @@ run = do
       Nothing -> "output"
       Just o -> o
     -- TODO: we might need to use `Path.relative selected.path output` instead of just output there
-    mainPath =
-      String.replaceAll (Pattern "\\") (Replacement "/") $
-        Path.concat [ output, opts.module, "index.js" ]
+    mainPath = withForwardSlashes $ Path.concat [ output, opts.module, "index.js" ]
 
     { input, entrypoint } = case opts.type of
       BundleApp -> { entrypoint: [], input: Cmd.StdinWrite ("#!/usr/bin/env node\n\nimport { main } from './" <> mainPath <> "'; main();") }
diff --git a/src/Spago/Command/Fetch.purs b/src/Spago/Command/Fetch.purs
index da74a07e4..3948e593d 100644
--- a/src/Spago/Command/Fetch.purs
+++ b/src/Spago/Command/Fetch.purs
@@ -207,21 +207,23 @@ run { packages, ensureRanges } = do
             case tarExists, tarIsGood of
               true, true -> pure unit -- Tar exists and is good, and we already unpacked it. Happy days!
               _, _ -> do
+                let packageUrl = "https://packages.registry.purescript.org/" <> PackageName.print name <> "/" <> versionString <> ".tar.gz"
                 logInfo $ "Fetching package " <> packageVersion
-                response <- liftAff $ Http.request
+                response <- liftAff $ withBackoff' $ Http.request
                   ( Http.defaultRequest
                       { method = Left Method.GET
                       , responseFormat = Response.arrayBuffer
-                      , url = "https://packages.registry.purescript.org/" <> PackageName.print name <> "/" <> versionString <> ".tar.gz"
+                      , url = packageUrl
                       }
                   )
                 case response of
-                  Left err -> die $ "Couldn't fetch package " <> packageVersion <> ":\n  " <> Http.printError err
-                  Right { status, body } | status /= StatusCode 200 -> do
+                  Nothing -> die $ "Couldn't reach the registry at " <> packageUrl
+                  Just (Left err) -> die $ "Couldn't fetch package " <> packageVersion <> ":\n  " <> Http.printError err
+                  Just (Right { status, body }) | status /= StatusCode 200 -> do
                     (buf :: Buffer) <- liftEffect $ Buffer.fromArrayBuffer body
                     bodyString <- liftEffect $ Buffer.toString Encoding.UTF8 buf
                     die $ "Couldn't fetch package " <> packageVersion <> ", status was not ok " <> show status <> ", got answer:\n  " <> bodyString
-                  Right r@{ body: archiveArrayBuffer } -> do
+                  Just (Right r@{ body: archiveArrayBuffer }) -> do
                     logDebug $ "Got status: " <> show r.status
                     -- check the size and hash of the tar against the metadata
                     archiveBuffer <- liftEffect $ Buffer.fromArrayBuffer archiveArrayBuffer
diff --git a/src/Spago/Command/Init.purs b/src/Spago/Command/Init.purs
index 706c7cbdd..ec52a159d 100644
--- a/src/Spago/Command/Init.purs
+++ b/src/Spago/Command/Init.purs
@@ -9,6 +9,7 @@ module Spago.Command.Init
 import Spago.Prelude
 
 import Data.Map as Map
+import Node.Path as Path
 import Registry.PackageName as PackageName
 import Registry.Version as Version
 import Spago.Config (Dependencies(..), SetAddress(..), Config)
@@ -46,11 +47,11 @@ run opts = do
   -- or just migrate a psc-package project
   let mainModuleName = "Main"
   whenDirNotExists "src" do
-    copyIfNotExists ("src/" <> mainModuleName <> ".purs") (srcMainTemplate mainModuleName)
+    copyIfNotExists ("src" <> Path.sep <> mainModuleName <> ".purs") (srcMainTemplate mainModuleName)
 
   whenDirNotExists "test" $ do
-    FS.mkdirp "test/Test"
-    copyIfNotExists "test/Test/Main.purs" (testMainTemplate "Test.Main")
+    FS.mkdirp (Path.concat [ "test", "Test" ])
+    copyIfNotExists (Path.concat [ "test", "Test", "Main.purs" ]) (testMainTemplate "Test.Main")
 
   copyIfNotExists ".gitignore" gitignoreTemplate
 
diff --git a/src/Spago/Command/Publish.purs b/src/Spago/Command/Publish.purs
index 859b38941..9614d6a2e 100644
--- a/src/Spago/Command/Publish.purs
+++ b/src/Spago/Command/Publish.purs
@@ -175,7 +175,8 @@ publish _args = do
             , version: publishConfig.version
             , license: publishConfig.license
             , owners: Nothing -- TODO specify owners in spago config
-            , files: Nothing -- TODO specify files in spago config
+            , excludeFiles: Nothing -- TODO specify files in spago config
+            , includeFiles: Nothing -- TODO specify files in spago config
             }
 
         unless (Operation.Validation.locationMatches (Manifest manifest) (Metadata metadata)) $ addError $ toDoc
diff --git a/src/Spago/Command/Run.purs b/src/Spago/Command/Run.purs
index af891784b..71162b04c 100644
--- a/src/Spago/Command/Run.purs
+++ b/src/Spago/Command/Run.purs
@@ -85,7 +85,7 @@ run = do
         nodeContents =
           Array.fold
             [ "import { main } from 'file://"
-            , String.replaceAll (Pattern "\\") (Replacement "/") opts.sourceDir
+            , withForwardSlashes opts.sourceDir
             , "/"
             , fromMaybe "output" workspace.buildOptions.output
             , "/"
diff --git a/src/Spago/Config.purs b/src/Spago/Config.purs
index 6c7087219..79c9a0bf7 100644
--- a/src/Spago/Config.purs
+++ b/src/Spago/Config.purs
@@ -166,7 +166,7 @@ readWorkspace maybeSelectedPackage = do
         | otherwise -> do
             -- TODO: here figure out if the lockfile is still valid by checking if:
             -- - the package set section of the workspace is the same
-            -- - the dependencies of each package are the same 
+            -- - the dependencies of each package are the same
             pure (UseLockfile contents)
     false
       -- If the user specifies lock: true then we always create a lockfile.
diff --git a/src/Spago/Esbuild.purs b/src/Spago/Esbuild.purs
index 7842616c6..e158ce85a 100644
--- a/src/Spago/Esbuild.purs
+++ b/src/Spago/Esbuild.purs
@@ -10,9 +10,6 @@ type Esbuild =
   }
 
 getEsbuild :: forall a. Spago (LogEnv a) Esbuild
-getEsbuild =
-  Cmd.exec "esbuild" [ "--version" ] Cmd.defaultExecOptions { pipeStdout = false, pipeStderr = false } >>= case _ of
-    Left err -> do
-      logDebug $ show err
-      die [ "Failed to find esbuild. See https://esbuild.github.io/getting-started/#install-esbuild for ways to install esbuild." ]
-    Right r -> pure { cmd: "esbuild", version: r.stdout }
+getEsbuild = do
+  { cmd, output } <- Cmd.getExecutable "esbuild"
+  pure { cmd, version: output }
diff --git a/src/Spago/Prelude.purs b/src/Spago/Prelude.purs
index 7c8be3ce3..96a41c605 100644
--- a/src/Spago/Prelude.purs
+++ b/src/Spago/Prelude.purs
@@ -12,6 +12,7 @@ module Spago.Prelude
   , withBackoff'
   , mkTemp
   , mkTemp'
+  , withForwardSlashes
   ) where
 
 import Spago.Core.Prelude
@@ -24,6 +25,7 @@ import Data.Foldable as Foldable
 import Data.Function.Uncurried (Fn3, runFn3)
 import Data.Int as Int
 import Data.Maybe as Maybe
+import Data.String (Pattern(..), Replacement(..))
 import Data.String as String
 import Effect.Aff as Aff
 import Effect.Now as Now
@@ -148,3 +150,6 @@ mkTemp' maybeSuffix = liftAff do
 
 mkTemp :: forall m. MonadAff m => m FilePath
 mkTemp = mkTemp' Nothing
+
+withForwardSlashes :: String -> String
+withForwardSlashes = String.replaceAll (Pattern "\\") (Replacement "/")
diff --git a/src/Spago/Purs.purs b/src/Spago/Purs.purs
index ae303afb8..82c09b6a5 100644
--- a/src/Spago/Purs.purs
+++ b/src/Spago/Purs.purs
@@ -8,8 +8,6 @@ import Data.Codec.Argonaut.Record as CAR
 import Data.Profunctor as Profunctor
 import Data.Set as Set
 import Data.String as String
-import Node.Platform as Platform
-import Node.Process as Process
 import Registry.Internal.Codec as Internal.Codec
 import Registry.Version as Version
 import Spago.Cmd as Cmd
@@ -26,43 +24,22 @@ type Purs =
   }
 
 getPurs :: forall a. Spago (LogEnv a) Purs
-getPurs =
-  case Process.platform of
-    Just Platform.Win32 -> do
-      -- On Windows, we often need to call `purs.cmd` instead of `purs`
-      pursVersion "purs.cmd" >>= case _ of
-        Right r -> parseVersionOutput "purs.cmd" r
-        Left err' -> do
-          logDebug [ "Failed to find purs.cmd. Trying with just purs...", show err' ]
-          pursVersion "purs" >>= case _ of
-            Right r -> parseVersionOutput "purs" r
-            Left err -> complain err
-    _ -> do
-      -- On other platforms, we just call `purs`
-      pursVersion "purs" >>= case _ of
-        Right r -> parseVersionOutput "purs" r
-        Left err -> complain err
+getPurs = Cmd.getExecutable "purs" >>= parseVersionOutput
+
+-- Drop the stuff after a space: dev builds look like this: 0.15.6 [development build; commit: 8da7e96005f717f03d6eee3c12b1f1416659a919]
+-- Drop the stuff after a hyphen: prerelease builds look like this: 0.15.6-2
+parseVersionOutput :: forall a. { cmd :: String, output :: String } -> Spago (LogEnv a) Purs
+parseVersionOutput { cmd, output: stdout } = case parseLenientVersion (dropStuff "-" $ dropStuff " " stdout) of
+  Left _err -> die $ "Failed to parse purs version. Was: " <> stdout
+  -- Fail if Purs is lower than 0.15.4
+  Right v ->
+    if Version.minor v >= 15 && Version.patch v >= 4 then
+      pure { cmd, version: v }
+    else
+      die [ "Unsupported PureScript version " <> Version.print v, "Please install PureScript v0.15.4 or higher." ]
   where
-  pursVersion cmd = Cmd.exec cmd [ "--version" ] Cmd.defaultExecOptions { pipeStdout = false, pipeStderr = false }
-
   dropStuff pattern = fromMaybe "" <<< Array.head <<< String.split (String.Pattern pattern)
 
-  complain err = do
-    logDebug $ show err
-    die [ "Failed to find purs. Have you installed it, and is it in your PATH?" ]
-
-  -- Drop the stuff after a space: dev builds look like this: 0.15.6 [development build; commit: 8da7e96005f717f03d6eee3c12b1f1416659a919]
-  -- Drop the stuff after a hyphen: prerelease builds look like this: 0.15.6-2
-  parseVersionOutput :: String -> _ -> Spago (LogEnv a) Purs
-  parseVersionOutput cmd result = case parseLenientVersion (dropStuff "-" $ dropStuff " " result.stdout) of
-    Left _err -> die $ "Failed to parse purs version. Was: " <> result.stdout
-    -- Fail if Purs is lower than 0.15.4
-    Right v ->
-      if Version.minor v >= 15 && Version.patch v >= 4 then
-        pure { cmd, version: v }
-      else
-        die [ "Unsupported PureScript version " <> Version.print v, "Please install PureScript v0.15.4 or higher." ]
-
 compile :: forall a. Set FilePath -> Array String -> Spago (PursEnv a) (Either Cmd.ExecError Cmd.ExecResult)
 compile globs pursArgs = do
   { purs } <- ask
diff --git a/src/Spago/Purs/Graph.purs b/src/Spago/Purs/Graph.purs
index 715e3d4fc..5c84511eb 100644
--- a/src/Spago/Purs/Graph.purs
+++ b/src/Spago/Purs/Graph.purs
@@ -96,9 +96,11 @@ checkImports = do
     addPackageInfo :: PackageGraph -> Tuple ModuleName ModuleGraphNode -> PackageGraph
     addPackageInfo pkgGraph (Tuple moduleName { path, depends }) =
       let
+        -- Windows paths will need a conversion to forward slashes to be matched to globs
+        newPath = withForwardSlashes path
         newVal = do
-          package <- Map.lookup path pathToPackage
-          pure { path, depends, package }
+          package <- Map.lookup newPath pathToPackage
+          pure { path: newPath, depends, package }
       in
         maybe pkgGraph (\v -> Map.insert moduleName v pkgGraph) newVal
     packageGraph = foldl addPackageInfo Map.empty (Map.toUnfoldable graph :: Array _)
@@ -149,7 +151,7 @@ checkImports = do
 
 compileGlob :: forall a. FilePath -> Spago (LogEnv a) (Array FilePath)
 compileGlob sourcePath = do
-  { succeeded, failed } <- Glob.match Paths.cwd [ sourcePath ]
+  { succeeded, failed } <- Glob.match Paths.cwd [ withForwardSlashes sourcePath ]
   unless (Array.null failed) do
     logDebug [ toDoc "Encountered some globs that are not in cwd, proceeding anyways:", indent $ toDoc failed ]
   pure (succeeded <> failed)
diff --git a/test-fixtures/sources-output.win.txt b/test-fixtures/sources-output.win.txt
new file mode 100644
index 000000000..a000589f1
--- /dev/null
+++ b/test-fixtures/sources-output.win.txt
@@ -0,0 +1,5 @@
+src\**\*.purs
+test\**\*.purs
+.spago\packages\console-6.0.0\src\**\*.purs
+.spago\packages\effect-4.0.0\src\**\*.purs
+.spago\packages\prelude-6.0.1\src\**\*.purs
diff --git a/test-fixtures/sources-subproject-output.win.txt b/test-fixtures/sources-subproject-output.win.txt
new file mode 100644
index 000000000..3c9528ba5
--- /dev/null
+++ b/test-fixtures/sources-subproject-output.win.txt
@@ -0,0 +1,5 @@
+.spago\packages\console-6.0.0\src\**\*.purs
+.spago\packages\effect-4.0.0\src\**\*.purs
+.spago\packages\prelude-6.0.1\src\**\*.purs
+subpackage\src\**\*.purs
+subpackage\test\**\*.purs
diff --git a/test/Prelude.purs b/test/Prelude.purs
index 96b14845b..e6e59ea1a 100644
--- a/test/Prelude.purs
+++ b/test/Prelude.purs
@@ -38,15 +38,15 @@ withTempDir = Aff.bracket createTempDir cleanupTempDir
     liftEffect $ Process.chdir temp
     log $ "Running test in " <> temp
     let
-      fixturesPath = oldCwd <> "/test-fixtures"
+      fixturesPath = oldCwd <> Path.sep <> "test-fixtures"
 
       fixture path = Path.concat [ fixturesPath, path ]
 
       spago' :: StdinConfig -> Array String -> Aff (Either ExecError ExecResult)
       spago' stdin args =
         Cmd.exec
-          (Path.concat [ oldCwd, "bin", "index.dev.js" ])
-          args
+          "node"
+          ([ Path.concat [ oldCwd, "bin", "index.dev.js" ] ] <> args)
           $ Cmd.defaultExecOptions { pipeStdout = false, pipeStderr = false, pipeStdin = stdin }
 
       spago = spago' StdinNewPipe
diff --git a/test/Spago/Build.purs b/test/Spago/Build.purs
index 0bb864cd2..3d984543a 100644
--- a/test/Spago/Build.purs
+++ b/test/Spago/Build.purs
@@ -2,6 +2,8 @@ module Test.Spago.Build where
 
 import Test.Prelude
 
+import Effect.Class.Console as Console
+import Node.Path as Path
 import Registry.Version as Version
 import Spago.Command.Init as Init
 import Spago.Core.Config as Config
@@ -48,11 +50,11 @@ spec = Spec.around withTempDir do
 
     Spec.it "there's only one output folder in a monorepo" \{ spago } -> do
       spago [ "init" ] >>= shouldBeSuccess
-      FS.mkdirp "subpackage/src"
-      FS.mkdirp "subpackage/test"
-      FS.writeTextFile "subpackage/src/Main.purs" (Init.srcMainTemplate "Subpackage.Main")
-      FS.writeTextFile "subpackage/test/Main.purs" (Init.testMainTemplate "Subpackage.Test.Main")
-      FS.writeYamlFile Config.configCodec "subpackage/spago.yaml"
+      FS.mkdirp (Path.concat [ "subpackage", "src" ])
+      FS.mkdirp (Path.concat [ "subpackage", "test" ])
+      FS.writeTextFile (Path.concat [ "subpackage", "src", "Main.purs" ]) (Init.srcMainTemplate "Subpackage.Main")
+      FS.writeTextFile (Path.concat [ "subpackage", "test", "Main.purs" ]) (Init.testMainTemplate "Subpackage.Test.Main")
+      FS.writeYamlFile Config.configCodec (Path.concat [ "subpackage", "spago.yaml" ])
         ( Init.defaultConfig
             (mkPackageName "subpackage")
             Nothing
@@ -61,18 +63,18 @@ spec = Spec.around withTempDir do
       spago [ "build" ] >>= shouldBeSuccess
       spago [ "build", "-p", "subpackage" ] >>= shouldBeSuccess
       FS.exists "output" `Assert.shouldReturn` true
-      FS.exists "subpackage/output" `Assert.shouldReturn` false
+      FS.exists (Path.concat [ "subpackage", "output" ]) `Assert.shouldReturn` false
 
     Spec.it "fails when there are imports from transitive dependencies and --pedantic-packages is passed" \{ spago, fixture } -> do
       spago [ "init", "--name", "7368613235362d34312f4e59746b7869335477336d33414d72" ] >>= shouldBeSuccess
       spago [ "install", "maybe" ] >>= shouldBeSuccess
-      FS.writeTextFile "src/Main.purs" "module Main where\nimport Prelude\nimport Data.Maybe\nimport Control.Alt\nmain = unit"
+      FS.writeTextFile (Path.concat [ "src", "Main.purs" ]) "module Main where\nimport Prelude\nimport Data.Maybe\nimport Control.Alt\nmain = unit"
       spago [ "build" ] >>= shouldBeSuccess
       spago [ "build", "--pedantic-packages" ] >>= shouldBeFailureErr (fixture "check-direct-import-transitive-dependency.txt")
 
     Spec.it "--pedantic-packages also warns about unused dependencies" \{ spago, fixture } -> do
       spago [ "init", "--name", "7368613235362d2f444a2b4f56375435646a59726b53586548" ] >>= shouldBeSuccess
-      FS.writeTextFile "src/Main.purs" "module Main where\nimport Prelude\nmain = unit"
+      FS.writeTextFile (Path.concat [ "src", "Main.purs" ]) "module Main where\nimport Prelude\nmain = unit"
       spago [ "build" ] >>= shouldBeSuccess
       spago [ "build", "--pedantic-packages" ] >>= shouldBeFailureErr (fixture "check-unused-dependency.txt")
 
diff --git a/test/Spago/Init.purs b/test/Spago/Init.purs
index 226344341..abe9b1d42 100644
--- a/test/Spago/Init.purs
+++ b/test/Spago/Init.purs
@@ -2,6 +2,7 @@ module Test.Spago.Init where
 
 import Test.Prelude
 
+import Node.Path as Path
 import Spago.FS as FS
 import Test.Spec (Spec)
 import Test.Spec as Spec
@@ -16,9 +17,9 @@ spec = Spec.around withTempDir do
 
     Spec.it "does not overwrite files when initing a project" \{ spago } -> do
       FS.mkdirp "src"
-      FS.writeTextFile "src/Main.purs" "Something"
+      FS.writeTextFile (Path.concat [ "src", "Main.purs" ]) "Something"
       spago [ "init" ] >>= shouldBeSuccess
-      fileContent <- FS.readTextFile "src/Main.purs"
+      fileContent <- FS.readTextFile (Path.concat [ "src", "Main.purs" ])
       fileContent `Assert.shouldEqual` "Something"
 
     Spec.it "always succeeds when doing init with force" \{ spago } -> do
diff --git a/test/Spago/Sources.purs b/test/Spago/Sources.purs
index fabca00a6..1d1fa5110 100644
--- a/test/Spago/Sources.purs
+++ b/test/Spago/Sources.purs
@@ -2,7 +2,8 @@ module Test.Spago.Sources where
 
 import Test.Prelude
 
-import Registry.PackageName as PackageName
+import Node.Platform as Platform
+import Node.Process as Process
 import Spago.Command.Init as Init
 import Spago.Core.Config as Config
 import Spago.FS as FS
@@ -15,7 +16,9 @@ spec = Spec.around withTempDir do
 
     Spec.it "contains both dependencies and project sources" \{ spago, fixture } -> do
       spago [ "init" ] >>= shouldBeSuccess
-      spago [ "sources" ] >>= shouldBeSuccessOutput (fixture "sources-output.txt")
+      spago [ "sources" ] >>= shouldBeSuccessOutput case Process.platform of
+        Just Platform.Win32 -> fixture "sources-output.win.txt"
+        _ -> fixture "sources-output.txt"
 
     Spec.it "contains subproject sources when selecting a subproject" \{ spago, fixture } -> do
       spago [ "init" ] >>= shouldBeSuccess
@@ -29,4 +32,6 @@ spec = Spec.around withTempDir do
             Nothing
             "Subpackage.Test.Main"
         )
-      spago [ "sources", "-p", "subpackage" ] >>= shouldBeSuccessOutput (fixture "sources-subproject-output.txt")
+      spago [ "sources", "-p", "subpackage" ] >>= shouldBeSuccessOutput case Process.platform of
+        Just Platform.Win32 -> fixture "sources-subproject-output.win.txt"
+        _ -> fixture "sources-subproject-output.txt"