Support nightly Julia builds

README.md

@@ -42,6 +42,7 @@ You can either specify specific Julia versions or version ranges. If you specify
 - `1.2.0` is a valid semver version. The action will try to download exactly this version. If it's not available, the build step will fail.
 - `1.0` is a version range that will match the highest available Julia version that starts with `1.0`, e.g. `1.0.5`.
 - `^1.3.0-rc1` is a caret version range that includes preleases. It matches all versions `≥ 1.3.0-rc1` and `< 1.4.0`.
+- `nightly` will install the latest nightly build.
 
 Internally the action uses node's semver package to resolve version ranges. Its [documentation](https://github.com/npm/node-semver#advanced-range-syntax) contains more details on the version range syntax.
 

__tests__/main.test.ts

@@ -14,6 +14,10 @@ describe('installer tests', () => {
                 expect(await installer.getJuliaVersion(['v1.2.0', 'v1.3.0-alpha', 'v1.3.0-rc1', 'v1.3.0'], '1.3.0-alpha')).toEqual('1.3.0-alpha')
                 expect(await installer.getJuliaVersion([], '1.3.0-rc2')).toEqual('1.3.0-rc2')
             })
+            it('Doesn\'t change the version when given `nightly`', async () => {
+                expect(await installer.getJuliaVersion([], 'nightly')).toEqual('nightly')
+                expect(await installer.getJuliaVersion(testVersions, 'nightly')).toEqual('nightly')
+            })
         })
         describe('version ranges', () => {
             it('Chooses the highest available version that matches the input', async () => {

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 {

src/installer.ts

@@ -21,6 +21,11 @@ export async function getJuliaVersion(availableReleases: string[], versionInput:
         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) {
@@ -38,9 +43,7 @@ function getMajorMinorVersion(version: string): string {
 }
 
 function getDownloadURL(version: string, arch: string): string {
-    const baseURL = 'https://julialang-s3.julialang.org/bin'
     let platform: string
-    const versionDir = getMajorMinorVersion(version)
 
     if (osPlat === 'win32') { // Windows
         platform = 'winnt'
@@ -55,6 +58,16 @@ function getDownloadURL(version: string, arch: string): string {
         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)}`
 }
 
@@ -71,7 +84,11 @@ function getFileName(version: string, arch: string): string {
         versionExt = '-mac64'
         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 {
         throw `Platform ${osPlat} is not supported`