Support installation specified of Python version for Linux

dist/index.js

@@ -1250,6 +1250,73 @@ module.exports = SemVer
 
 module.exports = require("os");
 
+/***/ }),
+
+/***/ 98:
+/***/ (function(__unusedmodule, exports, __webpack_require__) {
+
+"use strict";
+
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (Object.hasOwnProperty.call(mod, k)) result[k] = mod[k];
+    result["default"] = mod;
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const exec = __importStar(__webpack_require__(986));
+function getVariable(variableName) {
+    return __awaiter(this, void 0, void 0, function* () {
+        let variableValue = '';
+        const options = {
+            listeners: {
+                stdout: (data) => {
+                    variableValue += data.toString();
+                }
+            }
+        };
+        yield exec.exec('bash', ['-c', `echo $${variableName}`], options);
+        return variableValue.trim();
+    });
+}
+function downloadLinuxCpython(version) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const home = yield getVariable('HOME');
+        yield exec.exec('bash', [
+            '-c',
+            `
+    set -e # Any command which returns non-zero exit code will cause this shell script to exit immediately
+    set -x # Activate debugging to show execution details: all commands will be printed before execution
+    
+    sudo apt-get install build-essential checkinstall
+    sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev
+
+    cd $HOME
+    wget https://www.python.org/ftp/python/${version}/Python-${version}.tgz
+
+    tar -xvf Python-${version}.tgz
+    cd Python-${version}
+    ./configure
+    make
+    sudo checkinstall -y
+    `
+        ]);
+        return `${home}/Python-${version}`;
+    });
+}
+exports.downloadLinuxCpython = downloadLinuxCpython;
+
+
 /***/ }),
 
 /***/ 120:
@@ -6279,6 +6346,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 const os = __importStar(__webpack_require__(87));
 const path = __importStar(__webpack_require__(622));
 const semver = __importStar(__webpack_require__(876));
+const downloader = __importStar(__webpack_require__(98));
 let cacheDirectory = process.env['RUNNER_TOOLSDIRECTORY'] || '';
 if (!cacheDirectory) {
     let baseLocation;
@@ -6299,6 +6367,7 @@ if (!cacheDirectory) {
 const core = __importStar(__webpack_require__(470));
 const tc = __importStar(__webpack_require__(533));
 const IS_WINDOWS = process.platform === 'win32';
+const IS_LINUX = process.platform === 'linux';
 // Python has "scripts" or "bin" directories where command-line tools that come with packages are installed.
 // This is where pip is, along with anything that pip installs.
 // There is a seperate directory for `pip install --user`.
@@ -6354,7 +6423,11 @@ function useCpythonVersion(version, architecture) {
         const desugaredVersionSpec = desugarDevVersion(version);
         const semanticVersionSpec = pythonVersionToSemantic(desugaredVersionSpec);
         core.debug(`Semantic version spec of ${version} is ${semanticVersionSpec}`);
-        const installDir = tc.find('Python', semanticVersionSpec, architecture);
+        let installDir = tc.find('Python', semanticVersionSpec, architecture);
+        if (!installDir && IS_LINUX) {
+            core.info(`Can't find installed CPython ${version}; trying to download`);
+            installDir = yield downloader.downloadLinuxCpython(version);
+        }
         if (!installDir) {
             // Fail and list available versions
             const x86Versions = tc

src/download-python.ts

@@ -0,0 +1,43 @@
+import * as exec from '@actions/exec';
+
+async function getVariable(variableName: string): Promise<string> {
+  let variableValue = '';
+
+  const options = {
+    listeners: {
+      stdout: (data: Buffer) => {
+        variableValue += data.toString();
+      }
+    }
+  };
+
+  await exec.exec('bash', ['-c', `echo $${variableName}`], options);
+
+  return variableValue.trim();
+}
+
+export async function downloadLinuxCpython(version: string): Promise<string> {
+  const home = await getVariable('HOME');
+
+  await exec.exec('bash', [
+    '-c',
+    `
+    set -e # Any command which returns non-zero exit code will cause this shell script to exit immediately
+    set -x # Activate debugging to show execution details: all commands will be printed before execution
+    
+    sudo apt-get install build-essential checkinstall
+    sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev
+
+    cd $HOME
+    wget https://www.python.org/ftp/python/${version}/Python-${version}.tgz
+
+    tar -xvf Python-${version}.tgz
+    cd Python-${version}
+    ./configure
+    make
+    sudo checkinstall -y
+    `
+  ]);
+
+  return `${home}/Python-${version}`;
+}

src/find-python.ts

@@ -3,6 +3,8 @@ import * as path from 'path';
 
 import * as semver from 'semver';
 
+import * as downloader from './download-python';
+
 let cacheDirectory = process.env['RUNNER_TOOLSDIRECTORY'] || '';
 
 if (!cacheDirectory) {
@@ -24,6 +26,7 @@ import * as core from '@actions/core';
 import * as tc from '@actions/tool-cache';
 
 const IS_WINDOWS = process.platform === 'win32';
+const IS_LINUX = process.platform === 'linux';
 
 // Python has "scripts" or "bin" directories where command-line tools that come with packages are installed.
 // This is where pip is, along with anything that pip installs.
@@ -92,11 +95,16 @@ async function useCpythonVersion(
   const semanticVersionSpec = pythonVersionToSemantic(desugaredVersionSpec);
   core.debug(`Semantic version spec of ${version} is ${semanticVersionSpec}`);
 
-  const installDir: string | null = tc.find(
+  let installDir: string | null = tc.find(
     'Python',
     semanticVersionSpec,
     architecture
   );
+  if (!installDir && IS_LINUX) {
+    core.info(`Can't find installed CPython ${version}; trying to download`);
+    installDir = await downloader.downloadLinuxCpython(version);
+  }
+
   if (!installDir) {
     // Fail and list available versions
     const x86Versions = tc