Backport of plugin-getter: don't rely only on version for list into release/1.10.x

packer/plugin-getter/plugins.go

@@ -177,7 +177,7 @@ func (pr Requirement) ListInstallations(opts ListInstallationsOptions) (InstallL
 				continue
 			}
 
-			res.InsertSortedUniq(&Installation{
+			res = append(res, &Installation{
 				BinaryPath: path,
 				Version:    pluginVersionStr,
 			})
@@ -206,22 +206,6 @@ func (l InstallList) String() string {
 	return v.String()
 }
 
-// InsertSortedUniq inserts the installation in the right spot in the list by
-// comparing the version lexicographically.
-// A Duplicate version will replace any already present version.
-func (l *InstallList) InsertSortedUniq(install *Installation) {
-	pos := sort.Search(len(*l), func(i int) bool { return (*l)[i].Version >= install.Version })
-	if len(*l) > pos && (*l)[pos].Version == install.Version {
-		// already detected, let's ignore any new foundings, this way any plugin
-		// close to cwd or the packer exec takes precedence; this will be better
-		// for plugin development/tests.
-		return
-	}
-	(*l) = append((*l), nil)
-	copy((*l)[pos+1:], (*l)[pos:])
-	(*l)[pos] = install
-}
-
 // Installation describes a plugin installation
 type Installation struct {
 	// path to where binary is installed, if installed.

packer/plugin-getter/plugins_test.go

@@ -27,6 +27,8 @@ var (
 
 	pluginFolderTwo = filepath.Join("testdata", "plugins_2")
 
+	pluginFolderThree = filepath.Join("testdata", "plugins_3")
+
 	pluginFolderWrongChecksums = filepath.Join("testdata", "wrong_checksums")
 )
 
@@ -106,8 +108,8 @@ func TestPlugin_ListInstallations(t *testing.T) {
 					BinaryPath: filepath.Join(pluginFolderOne, "github.com", "hashicorp", "amazon", "packer-plugin-amazon_v1.2.5_x5.0_windows_amd64.exe"),
 				},
 				{
-					BinaryPath: filepath.Join(pluginFolderOne, "github.com", "hashicorp", "google", "packer-plugin-google_v4.5.6_x5.0_windows_amd64.exe"),
 					Version:    "v4.5.6",
+					BinaryPath: filepath.Join(pluginFolderOne, "github.com", "hashicorp", "google", "packer-plugin-google_v4.5.6_x5.0_windows_amd64.exe"),
 				},
 				{
 					Version:    "v4.5.7",
@@ -117,10 +119,22 @@ func TestPlugin_ListInstallations(t *testing.T) {
 					Version:    "v4.5.8",
 					BinaryPath: filepath.Join(pluginFolderOne, "github.com", "hashicorp", "google", "packer-plugin-google_v4.5.8_x5.0_windows_amd64.exe"),
 				},
+				{
+					Version:    "v4.5.6",
+					BinaryPath: filepath.Join(pluginFolderTwo, "github.com", "hashicorp", "google", "packer-plugin-google_v4.5.6_x5.0_windows_amd64.exe"),
+				},
 				{
 					Version:    "v4.5.9",
 					BinaryPath: filepath.Join(pluginFolderTwo, "github.com", "hashicorp", "google", "packer-plugin-google_v4.5.9_x5.0_windows_amd64.exe"),
 				},
+				{
+					Version:    "v4.5.6",
+					BinaryPath: filepath.Join(pluginFolderTwo, "github.com", "hashicorp copy", "google", "packer-plugin-google_v4.5.6_x5.0_windows_amd64.exe"),
+				},
+				{
+					Version:    "v4.5.9",
+					BinaryPath: filepath.Join(pluginFolderTwo, "github.com", "hashicorp copy", "google", "packer-plugin-google_v4.5.9_x5.0_windows_amd64.exe"),
+				},
 			},
 		},
 
@@ -188,6 +202,10 @@ func TestPlugin_ListInstallations(t *testing.T) {
 					Version:    "v1.2.3",
 					BinaryPath: filepath.Join(pluginFolderOne, "github.com", "hashicorp", "amazon", "packer-plugin-amazon_v1.2.3_x5.0_darwin_amd64"),
 				},
+				{
+					Version:    "v1.2.3",
+					BinaryPath: filepath.Join(pluginFolderOne, "github.com", "hashicorp", "amazon", "packer-plugin-amazon_v1.2.3_x5.1_darwin_amd64"),
+				},
 				{
 					Version:    "v1.2.4",
 					BinaryPath: filepath.Join(pluginFolderOne, "github.com", "hashicorp", "amazon", "packer-plugin-amazon_v1.2.4_x5.0_darwin_amd64"),
@@ -276,12 +294,48 @@ func TestPlugin_ListInstallations(t *testing.T) {
 					Version:    "v4.5.8",
 					BinaryPath: filepath.Join(pluginFolderOne, "github.com", "hashicorp", "google", "packer-plugin-google_v4.5.8_x5.0_windows_amd64.exe"),
 				},
+				{
+					Version:    "v4.5.6",
+					BinaryPath: filepath.Join(pluginFolderTwo, "github.com", "hashicorp", "google", "packer-plugin-google_v4.5.6_x5.0_windows_amd64.exe"),
+				},
 				{
 					Version:    "v4.5.9",
 					BinaryPath: filepath.Join(pluginFolderTwo, "github.com", "hashicorp", "google", "packer-plugin-google_v4.5.9_x5.0_windows_amd64.exe"),
 				},
 			},
 		},
+		{
+			"test nil identifier - multiple plugins with same version",
+			fields{
+				Identifier: "",
+			},
+			ListInstallationsOptions{
+				[]string{
+					pluginFolderThree,
+				},
+				BinaryInstallationOptions{
+					APIVersionMajor: "5", APIVersionMinor: "0",
+					OS: "linux", ARCH: "amd64",
+					Checksummers: []Checksummer{
+						{
+							Type: "sha256",
+							Hash: sha256.New(),
+						},
+					},
+				},
+			},
+			false,
+			[]*Installation{
+				{
+					Version:    "v1.2.5",
+					BinaryPath: filepath.Join(pluginFolderThree, "github.com", "hashicorp", "alazon", "packer-plugin-alazon_v1.2.5_x5.0_linux_amd64"),
+				},
+				{
+					Version:    "v1.2.5",
+					BinaryPath: filepath.Join(pluginFolderThree, "github.com", "hashicorp", "amazon", "packer-plugin-amazon_v1.2.5_x5.0_linux_amd64"),
+				},
+			},
+		},
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {

packer/plugin-getter/testdata/plugins_3/github.com/hashicorp/alazon/packer-plugin-alazon_v1.2.5_x5.0_linux_amd64

@@ -0,0 +1 @@
+5

packer/plugin-getter/testdata/plugins_3/github.com/hashicorp/alazon/packer-plugin-alazon_v1.2.5_x5.0_linux_amd64_SHA256SUM

@@ -0,0 +1 @@
+ef2d127de37b942baad06145e54b0c619a1f22327b2ebbcfbec78f5564afe39d

packer/plugin-getter/testdata/plugins_3/github.com/hashicorp/amazon/packer-plugin-amazon_v1.2.5_x5.0_linux_amd64

@@ -0,0 +1 @@
+5

packer/plugin-getter/testdata/plugins_3/github.com/hashicorp/amazon/packer-plugin-amazon_v1.2.5_x5.0_linux_amd64_SHA256SUM

@@ -0,0 +1 @@
+ef2d127de37b942baad06145e54b0c619a1f22327b2ebbcfbec78f5564afe39d