one step to install all

created postinstall hook in root package.json to trigger child installation
updated README.md
updated yarn.lock

README.md

@@ -23,11 +23,10 @@ Your goal is to produce shapes by cutting, rotating, merging and painting parts
 ## Building
 
 -   Make sure `ffmpeg` is on your path
--   Install Node.js and Yarn
+-   Install [Node.js LTS](https://nodejs.org/en/download/) and [Yarn v1](https://classic.yarnpkg.com/en/docs/install)
 -   Install Java (required for textures)
--   Run `yarn` in the root folder
--   Cd into `gulp` folder
--   Run `yarn` and then `yarn gulp` - it should now open in your browser
+-   Run `yarn install` in the root folder
+-   Then `yarn dev` - it should now open in your browser
 
 **Notice**: This will produce a debug build with several debugging flags enabled. If you want to disable them, modify [`src/js/core/config.js`](src/js/core/config.js).
 

package.json

@@ -7,6 +7,7 @@
     "license": "MIT",
     "private": true,
     "scripts": {
+        "postinstall": "cd gulp && yarn install",
         "dev": "cd gulp && yarn gulp main.serveDev",
         "tslint": "cd src/js && tsc",
         "lint": "eslint src/js",
@@ -97,7 +98,6 @@
         "prettier": "^2.0.4",
         "sass-unused": "^0.3.0",
         "strip-json-comments": "^3.0.1",
-        "trim": "^0.0.1",
-        "yarn": "^1.22.4"
+        "trim": "^0.0.1"
     }
 }

yarn.lock

@@ -5103,14 +5103,6 @@ levn@^0.4.1:
     prelude-ls "^1.2.1"
     type-check "~0.4.0"
 
-line-column@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/line-column/-/line-column-1.0.2.tgz#d25af2936b6f4849172b312e4792d1d987bc34a2"
-  integrity sha1-0lryk2tvSEkXKzEuR5LR2Ye8NKI=
-  dependencies:
-    isarray "^1.0.0"
-    isobject "^2.0.0"
-
 load-bmfont@^1.3.1, load-bmfont@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/load-bmfont/-/load-bmfont-1.4.0.tgz#75f17070b14a8c785fe7f5bee2e6fd4f98093b6b"
@@ -5619,10 +5611,10 @@ nan@^2.12.1:
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.1.tgz#d7be34dfa3105b91494c3147089315eff8874b01"
   integrity sha512-isWHgVjnFjh2x2yuJ/tj3JbwoHu3UC2dX5G/88Cm24yB6YopVgxvBObDY7n5xW6ExmFhJpSEQqFPvq9zaXc8Jw==
 
-nanoid@^3.1.12:
-  version "3.1.12"
-  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.1.12.tgz#6f7736c62e8d39421601e4a0c77623a97ea69654"
-  integrity sha512-1qstj9z5+x491jfiC4Nelk+f8XBad7LN20PmyWINJEMRSf3wcAjAWysw1qaA8z6NSKe2sjq1hRSDpBH5paCb6A==
+nanoid@^3.1.20:
+  version "3.1.20"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.1.20.tgz#badc263c6b1dcf14b71efaa85f6ab4c1d6cfc788"
+  integrity sha512-a1cQNyczgKbLX9jwbS/+d7W8fX/RfgYR7lVWwWOGIPNgK2m0MWvrGF6/m4kk6U3QcFMnZf3RIhL0v2Jgh/0Uxw==
 
 nanomatch@^1.2.9:
   version "1.2.13"
@@ -6927,6 +6919,15 @@ postcss-zindex@^4.0.1:
     postcss "^7.0.0"
     uniqs "^2.0.0"
 
+postcss@>=5.0.0:
+  version "8.2.4"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.2.4.tgz#20a98a39cf303d15129c2865a9ec37eda0031d04"
+  integrity sha512-kRFftRoExRVXZlwUuay9iC824qmXPcQQVzAjbCCgjpXnkdMCJYBu2gTwAaFBzv8ewND6O8xFb3aELmEkh9zTzg==
+  dependencies:
+    colorette "^1.2.1"
+    nanoid "^3.1.20"
+    source-map "^0.6.1"
+
 postcss@^5.0.2:
   version "5.2.18"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-5.2.18.tgz#badfa1497d46244f6390f58b319830d9107853c5"
@@ -6955,16 +6956,6 @@ postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.14, postcss@^7.0.17, postcss@^7.0.2
     source-map "^0.6.1"
     supports-color "^6.1.0"
 
-postcss@^8.1.1:
-  version "8.1.1"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.1.1.tgz#c3a287dd10e4f6c84cb3791052b96a5d859c9389"
-  integrity sha512-9DGLSsjooH3kSNjTZUOt2eIj2ZTW0VI2PZ/3My+8TC7KIbH2OKwUlISfDsf63EP4aiRUt3XkEWMWvyJHvJelEg==
-  dependencies:
-    colorette "^1.2.1"
-    line-column "^1.0.2"
-    nanoid "^3.1.12"
-    source-map "^0.6.1"
-
 prelude-ls@^1.2.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.2.1.tgz#debc6489d7a6e6b0e7611888cec880337d316396"
@@ -8957,11 +8948,6 @@ yargs@^15.3.1:
     y18n "^4.0.0"
     yargs-parser "^18.1.1"
 
-yarn@^1.22.4:
-  version "1.22.4"
-  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.22.4.tgz#01c1197ca5b27f21edc8bc472cd4c8ce0e5a470e"
-  integrity sha512-oYM7hi/lIWm9bCoDMEWgffW8aiNZXCWeZ1/tGy0DWrN6vmzjCXIKu2Y21o8DYVBUtiktwKcNoxyGl/2iKLUNGA==
-
 yauzl@^2.4.2:
   version "2.10.0"
   resolved "https://registry.yarnpkg.com/yauzl/-/yauzl-2.10.0.tgz#c7eb17c93e112cb1086fa6d8e51fb0667b79a5f9"