ipfs: prepare to add 0.9 in addition

(cherry picked from commit 27949d611a7cca14e21438df725f7c6356f458ac)

pkgs/applications/networking/ipfs/0.9.nix

@@ -0,0 +1,45 @@
+{ lib, buildGoModule, fetchurl, nixosTests }:
+
+buildGoModule rec {
+  pname = "ipfs";
+  version = "0.8.0";
+  rev = "v${version}";
+
+  # go-ipfs makes changes to it's source tarball that don't match the git source.
+  src = fetchurl {
+    url = "https://github.com/ipfs/go-ipfs/releases/download/${rev}/go-ipfs-source.tar.gz";
+    sha256 = "sha256-uK3+Ekr5AM6mmGmjFSj1Rotm5pbH657BYUlP9B39WEw=";
+  };
+
+  # tarball contains multiple files/directories
+  postUnpack = ''
+    mkdir ipfs-src
+    shopt -s extglob
+    mv !(ipfs-src) ipfs-src || true
+    cd ipfs-src
+  '';
+
+  sourceRoot = ".";
+
+  subPackages = [ "cmd/ipfs" ];
+
+  passthru.tests.ipfs = nixosTests.ipfs;
+
+  vendorSha256 = null;
+
+  postInstall = ''
+    install --mode=444 -D misc/systemd/ipfs.service $out/etc/systemd/system/ipfs.service
+    install --mode=444 -D misc/systemd/ipfs-api.socket $out/etc/systemd/system/ipfs-api.socket
+    install --mode=444 -D misc/systemd/ipfs-gateway.socket $out/etc/systemd/system/ipfs-gateway.socket
+    substituteInPlace $out/etc/systemd/system/ipfs.service \
+      --replace /usr/bin/ipfs $out/bin/ipfs
+  '';
+
+  meta = with lib; {
+    description = "A global, versioned, peer-to-peer filesystem";
+    homepage = "https://ipfs.io/";
+    license = licenses.mit;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ fpletz ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -5802,7 +5802,7 @@ in
   iperf3 = callPackage ../tools/networking/iperf/3.nix { };
   iperf = iperf3;
 
-  ipfs = callPackage ../applications/networking/ipfs { };
+  ipfs = callPackage ../applications/networking/ipfs/0.8.nix { };
   ipfs-migrator = callPackage ../applications/networking/ipfs-migrator { };
   ipfs-cluster = callPackage ../applications/networking/ipfs-cluster { };