Support nightly Julia builds

lib/installer.js

@@ -32,6 +32,10 @@ function getJuliaVersion(availableReleases, versionInput) {
             // versionInput is a valid version, use it directly
             return versionInput;
         }
+        // nightlies
+        if (versionInput == 'nightly') {
+            return 'nightly';
+        }
         // Use the highest available version that matches versionInput
         let version = semver.maxSatisfying(availableReleases, versionInput);
         if (version == null) {
@@ -47,9 +51,7 @@ function getMajorMinorVersion(version) {
     return version.split('.').slice(0, 2).join('.');
 }
 function getDownloadURL(version, arch) {
-    const baseURL = 'https://julialang-s3.julialang.org/bin';
     let platform;
-    const versionDir = getMajorMinorVersion(version);
     if (osPlat === 'win32') { // Windows
         platform = 'winnt';
     }
@@ -65,6 +67,14 @@ function getDownloadURL(version, arch) {
     else {
         throw `Platform ${osPlat} is not supported`;
     }
+    // nightlies
+    if (version == 'nightly') {
+        const baseURL = 'https://julialangnightlies-s3.julialang.org/bin';
+        return `${baseURL}/${platform}/${arch}/${getFileName('latest', arch)}`;
+    }
+    // normal versions
+    const baseURL = 'https://julialang-s3.julialang.org/bin';
+    const versionDir = getMajorMinorVersion(version);
     return `${baseURL}/${platform}/${arch}/${versionDir}/${getFileName(version, arch)}`;
 }
 function getFileName(version, arch) {
@@ -81,7 +91,12 @@ function getFileName(version, arch) {
         ext = 'dmg';
     }
     else if (osPlat === 'linux') { // Linux
-        versionExt = arch == 'x64' ? '-linux-x86_64' : '-linux-i686';
+        if (version == 'latest') { // nightly version
+            versionExt = arch == 'x64' ? '-linux64' : '-linux32';
+        }
+        else {
+            versionExt = arch == 'x64' ? '-linux-x86_64' : '-linux-i686';
+        }
         ext = 'tar.gz';
     }
     else {