[pkg] modify version gen to read static version file

this can be used from any build script to distinguish the version string
that will be displayed (ie: 0.21.2-debian-1)

- Resolves: #468

.gitignore

@@ -21,6 +21,8 @@ lib/*
 qtbuild/*
 providers/assets
 
+debian/files
+
 .*.swp
 *.exe
 

debian/changelog

@@ -1,4 +1,4 @@
-riseup-vpn (0.21.2.1) groovy; urgency=medium
+riseup-vpn (0.21.2.2) groovy; urgency=medium
 
   * Initial Release.
 

docs/build-ppa.rst

@@ -0,0 +1,11 @@
+ppa howto
+=========
+
+* Add changes to changelog (bump native dot-version, change release)
+* Upload changes file
+
+.. code:: bash
+
+  debuild -i -S
+  dput --force ppa:kalikaneko/ppa ../riseup-vpn_0.21.2.2_source.changes
+

docs/release-howto.rst

@@ -1,7 +1,9 @@
-how to make a release
+Release procedure
 =====================
-1. Tag the release
-2. Build the latest builder image:
+1. Bump the static release file in `pkg/version`. After a release, this should read something like `0.21.2+git`. This file is used to generate version strings from tarballs.
+
+2. Tag the release
+3. Build the latest builder image:
 
 ```
 make builder_image
@@ -18,13 +20,7 @@ make package_snap_in_docker
 
 4. Build the windows installer:
 
-This is a bit complicated, since it is a two-stage build. It will need you have
-cloned the secrets folder containing the windows authenticode. You also have to
-have wine (32 bits) installed in your host machine.
-
-```
-make package_win_in_docker
-```
+(TBD)
 
 5. Build the OSX package: 
 

pkg/config/version/genver/main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"flag"
 	"io"
+	"io/ioutil"
 	"log"
 	"os"
 	"os/exec"
@@ -43,7 +44,7 @@ func main() {
 
 	vers, err := GitDescribe(dir)
 	if err != nil {
-		log.Fatal(err)
+		vers = ReadVersionFile(dir)
 	}
 	vp := VersionPackage{
 		Name:     *flPackageName,
@@ -70,7 +71,7 @@ var packageLayout = `package {{.Name}}
 // AUTO-GENERATED. DO NOT EDIT
 // {{.Date}}
 
-// {{.Variable}} is generated by git-describe from gen.go
+// {{.Variable}} is generated by git-describe or static version file from gen.go
 var {{.Variable}} = "{{.Version}}"
  `
 
@@ -93,3 +94,12 @@ func GitDescribe(path string) (string, error) {
 
 	return strings.TrimSpace(string(buf)), nil
 }
+
+func ReadVersionFile(path string) string {
+	versionFile := filepath.Join(path, "../../../version")
+	content, err := ioutil.ReadFile(versionFile)
+	if err != nil {
+		return "unknown"
+	}
+	return strings.Trim(string(content), "\n")
+}

pkg/version

@@ -0,0 +1 @@
+0.21.2+git