diff --git a/infra/bots/gen_tasks.go b/infra/bots/gen_tasks.go
deleted file mode 100644
index 92e5820..0000000
--- a/infra/bots/gen_tasks.go
+++ /dev/null
@@ -1,135 +0,0 @@
-// Copyright 2018 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-package main
-
-import (
-	"go.skia.org/infra/task_scheduler/go/specs"
-)
-
-var (
-	TASKS = []string{
-		"skcms-Linux",
-		"skcms-Mac",
-		"skcms-Win",
-	}
-)
-
-func addTask(b *specs.TasksCfgBuilder, task string) {
-	dimensions := map[string][]string{
-		// It's nice to test on Skylake Xeons, which support AVX-512.
-		"skcms-Linux": []string{"os:Linux", "cpu:x86-64-Skylake_GCE"},
-		"skcms-Mac":   []string{"os:Mac"},
-		// We think there's something amiss building on Win7 or Win8 bots, so restrict to 2016.
-		"skcms-Win": []string{"os:Windows-2016Server"},
-	}
-	packages := map[string][]*specs.CipdPackage{
-		"skcms-Linux": []*specs.CipdPackage{
-			&specs.CipdPackage{
-				Name:    "infra/ninja/linux-amd64",
-				Path:    "ninja",
-				Version: "version:1.8.2",
-			},
-			&specs.CipdPackage{
-				Name:    "skia/bots/android_ndk_linux",
-				Path:    "ndk",
-				Version: "version:15",
-			},
-			&specs.CipdPackage{
-				Name:    "skia/bots/clang_linux",
-				Path:    "clang_linux",
-				Version: "version:14",
-			},
-			&specs.CipdPackage{
-				Name:    "skia/bots/mips64el_toolchain_linux",
-				Path:    "mips64el_toolchain_linux",
-				Version: "version:4",
-			},
-		},
-		"skcms-Mac": []*specs.CipdPackage{
-			&specs.CipdPackage{
-				Name:    "infra/ninja/mac-amd64",
-				Path:    "ninja",
-				Version: "version:1.8.2",
-			},
-			&specs.CipdPackage{
-				Name:    "skia/bots/android_ndk_darwin",
-				Path:    "ndk",
-				Version: "version:9",
-			},
-			// Copied from
-			// https://skia.googlesource.com/skia/+/30a4e3da4bf341d5968b8cdf5bc2260e7f0d4b04/infra/bots/gen_tasks.go#206
-			// https://chromium.googlesource.com/chromium/tools/build/+/e19b7d9390e2bb438b566515b141ed2b9ed2c7c2/scripts/slave/recipe_modules/ios/api.py#317
-			// This package is really just an installer for XCode.
-			&specs.CipdPackage{
-				Name:    "infra/tools/mac_toolchain/${platform}",
-				Path:    "mac_toolchain",
-				Version: "git_revision:796d2b92cff93fc2059623ce0a66284373ceea0a",
-			},
-		},
-		"skcms-Win": []*specs.CipdPackage{
-			&specs.CipdPackage{
-				Name:    "skia/bots/win_ninja",
-				Path:    "ninja",
-				Version: "version:2",
-			},
-			&specs.CipdPackage{
-				Name:    "skia/bots/win_toolchain",
-				Path:    "win_toolchain",
-				Version: "version:9",
-			},
-			&specs.CipdPackage{
-				Name:    "skia/bots/clang_win",
-				Path:    "clang_win",
-				Version: "version:9",
-			},
-		},
-	}
-
-	caches := map[string][]*specs.Cache{
-		"skcms-Mac": []*specs.Cache{
-			// Use a different cache from Skia so that there's less churn if we update
-			// the Xcode version for one without updating the other.
-			&specs.Cache{
-				Name: "xcode_skcms",
-				Path: "cache/Xcode_skcms.app",
-			},
-		},
-	}
-
-	command := []string{"python", "skcms/infra/bots/bot.py"}
-	for _, p := range packages[task] {
-		command = append(command, p.Path)
-	}
-	for _, c := range caches[task] {
-		command = append(command, c.Path)
-	}
-
-	b.MustAddTask(task, &specs.TaskSpec{
-		Caches:       caches[task],
-		CipdPackages: packages[task],
-		Command:      command,
-		Dimensions:   append(dimensions[task], "gpu:none", "pool:Skia"),
-		Isolate:      "bot.isolate",
-		MaxAttempts:  1,
-		// This service account gives mac_toolchain access to the Xcode CIPD packages.
-		ServiceAccount: "skia-external-compile-tasks@skia-swarming-bots.iam.gserviceaccount.com",
-	})
-
-	b.MustAddJob(task, &specs.JobSpec{
-		TaskSpecs: []string{task},
-	})
-}
-
-func main() {
-	b := specs.MustNewTasksCfgBuilder()
-	for _, task := range TASKS {
-		addTask(b, task)
-	}
-
-	b.MustAddJob("skcms", &specs.JobSpec{
-		TaskSpecs: TASKS,
-	})
-	b.MustFinish()
-}
diff --git a/infra/bots/tasks.json b/infra/bots/tasks.json
index a61fc7e..04fe680 100644
--- a/infra/bots/tasks.json
+++ b/infra/bots/tasks.json
@@ -45,10 +45,15 @@
           "name": "skia/bots/mips64el_toolchain_linux",
           "path": "mips64el_toolchain_linux",
           "version": "version:4"
+        },
+        {
+          "name": "infra/python/cpython/linux-amd64",
+          "path": "python",
+          "version": "version:2.7.15.chromium14"
         }
       ],
       "command": [
-        "python",
+        "python/bin/python",
         "skcms/infra/bots/bot.py",
         "ninja",
         "ndk",
@@ -87,10 +92,15 @@
           "name": "infra/tools/mac_toolchain/${platform}",
           "path": "mac_toolchain",
           "version": "git_revision:796d2b92cff93fc2059623ce0a66284373ceea0a"
+        },
+        {
+          "name": "infra/python/cpython/mac-amd64",
+          "path": "python",
+          "version": "version:2.7.15.chromium14"
         }
       ],
       "command": [
-        "python",
+        "python/bin/python",
         "skcms/infra/bots/bot.py",
         "ninja",
         "ndk",
@@ -122,10 +132,15 @@
           "name": "skia/bots/clang_win",
           "path": "clang_win",
           "version": "version:9"
+        },
+        {
+          "name": "infra/python/cpython/windows-amd64",
+          "path": "python",
+          "version": "version:2.7.15.chromium14"
         }
       ],
       "command": [
-        "python",
+        "python/bin/python.exe",
         "skcms/infra/bots/bot.py",
         "ninja",
         "win_toolchain",