diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
index 530e2707a2a9..edf463d360e3 100644
--- a/pkgs/development/haskell-modules/configuration-nix.nix
+++ b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -662,33 +662,9 @@ self: super: builtins.intersectAttrs super {
 
   spago =
     let
-      # Spago needs a small patch to work with the latest versions of rio.
-      # https://github.com/purescript/spago/pull/647
-      spagoWithPatches = overrideCabal (appendPatch super.spago (
-        # Spago-0.17 needs a small patch to work with the latest version of dhall.
-        # This can probably be removed with Spago-0.18.
-        # https://github.com/purescript/spago/pull/695
-        pkgs.fetchpatch {
-          url = "https://github.com/purescript/spago/commit/6258ac601480e776c215c989cc5faae46d5ca9f7.patch";
-          sha256 = "02zy4jf24qlqz9fkcs2rqg64ijd8smncmra8s5yp2mln4dmmii1k";
-        }
-      )) (old: {
-        # The above patch contains a completely new spago.cabal file, but our
-        # source tree from Hackage already contains a cabal file.  Delete the
-        # local cabal file and just take the one from the patch.
-        #
-        # WARNING: The empty line above the `rm` needs to be kept.
-        prePatch = old.prePatch or "" + ''
-
-          rm spago.cabal
-        '';
-        # The above patch also adds a dependency on the stringsearch package.
-        libraryHaskellDepends = old.libraryHaskellDepends or [] ++ [ self.stringsearch ];
-      });
-
       # spago requires an older version of megaparsec, but it appears to work
       # fine with newer versions.
-      spagoWithOverrides = doJailbreak spagoWithPatches;
+      spagoWithOverrides = doJailbreak super.spago;
 
       # This defines the version of the purescript-docs-search release we are using.
       # This is defined in the src/Spago/Prelude.hs file in the spago source.
diff --git a/pkgs/development/tools/purescript/spago/default.nix b/pkgs/development/tools/purescript/spago/default.nix
index f5720837d79e..62e85a874875 100644
--- a/pkgs/development/tools/purescript/spago/default.nix
+++ b/pkgs/development/tools/purescript/spago/default.nix
@@ -1,6 +1,9 @@
 { haskell
 , haskellPackages
 , lib
+
+# The following are only needed for the passthru.tests:
+, git
 , nodejs
 , purescript
 , runCommand
@@ -32,6 +35,7 @@ spago.overrideAttrs (oldAttrs: {
         {
           __noChroot = true;
           nativeBuildInputs = [
+            git
             nodejs
             purescript
             spago
diff --git a/pkgs/development/tools/purescript/spago/spago.nix b/pkgs/development/tools/purescript/spago/spago.nix
index 4a5ad361e9fd..43f8e66d8704 100644
--- a/pkgs/development/tools/purescript/spago/spago.nix
+++ b/pkgs/development/tools/purescript/spago/spago.nix
@@ -1,21 +1,22 @@
 { mkDerivation, aeson, aeson-pretty, ansi-terminal, async-pool
 , base, bower-json, bytestring, Cabal, containers, dhall, directory
 , either, exceptions, extra, fetchgit, file-embed, filepath, foldl
-, fsnotify, github, Glob, hpack, hspec, hspec-discover
-, hspec-megaparsec, http-client, http-conduit, http-types
-, lens-family-core, megaparsec, mtl, network-uri, open-browser
-, optparse-applicative, prettyprinter, process, QuickCheck, retry
-, rio, rio-orphans, safe, semver-range, stdenv, stm, tar
-, template-haskell, temporary, text, time, transformers, turtle
-, unliftio, unordered-containers, vector, versions, with-utf8, zlib
+, fsnotify, generic-lens, github, Glob, hpack, hspec
+, hspec-discover, hspec-megaparsec, http-client, http-conduit
+, http-types, lens-family-core, megaparsec, mtl, network-uri
+, open-browser, optparse-applicative, prettyprinter, process
+, QuickCheck, retry, rio, rio-orphans, safe, semver-range, stdenv
+, stm, stringsearch, tar, template-haskell, temporary, text, time
+, transformers, turtle, unliftio, unordered-containers, utf8-string
+, vector, versions, with-utf8, zlib
 }:
 mkDerivation {
   pname = "spago";
-  version = "0.17.0";
+  version = "0.18.0";
   src = fetchgit {
     url = "https://github.com/purescript/spago.git";
-    sha256 = "1w9y1gvk307f92gixs5g02zbg0xwhrshwmc5j97pxhbzzg9qjidy";
-    rev = "3309afdef25e3e77f991a079eed78ff2f750e463";
+    sha256 = "03ww7qhrggwsbm0kcnvcr3ifb8rm860ajimzr81isiw46ykwrl38";
+    rev = "a4d39c21cae2f2c6d43fa204853c8e17c72904d2";
     fetchSubmodules = true;
   };
   isLibrary = true;
@@ -23,12 +24,12 @@ mkDerivation {
   libraryHaskellDepends = [
     aeson aeson-pretty ansi-terminal async-pool base bower-json
     bytestring Cabal containers dhall directory either exceptions
-    file-embed filepath foldl fsnotify github Glob http-client
-    http-conduit http-types lens-family-core megaparsec mtl network-uri
-    open-browser optparse-applicative prettyprinter process retry rio
-    rio-orphans safe semver-range stm tar template-haskell temporary
-    text time transformers turtle unliftio unordered-containers vector
-    versions with-utf8 zlib
+    file-embed filepath foldl fsnotify generic-lens github Glob
+    http-client http-conduit http-types lens-family-core megaparsec mtl
+    network-uri open-browser optparse-applicative prettyprinter process
+    retry rio rio-orphans safe semver-range stm stringsearch tar
+    template-haskell temporary text time transformers turtle unliftio
+    unordered-containers utf8-string vector versions with-utf8 zlib
   ];
   libraryToolDepends = [ hpack ];
   executableHaskellDepends = [ base text turtle with-utf8 ];