Tentative fix to include package dependencies.

src/loaih/build.py

@@ -91,11 +91,22 @@ class Build():
         """Calculate exclusions and other variables."""
 
         if self.verbose:
-            print("--- Preliminary system checks ---")
+            print("--- Preliminary Phase ---")
 
         if isinstance(shutil.which('apt'), str):
             # APT is found in path. We assume we can find dependencies.
             self.check_dependencies = True
+
+
+            if self.verbose:
+                print("Updating system packages cache.")
+            # Updating package cache
+            subprocess.run(['sudo', 'apt', 'update'], check=True, stdout=subprocess.DEVNULL)
+            if self.verbose:
+                print("Ensuring apt-file is installed and updated.")
+            # Updating apt-file cache
+            subprocess.run(['sudo', 'apt', 'install', 'apt-file', '-y'], check=True, stdout=subprocess.DEVNULL)
+            subprocess.run(['sudo', 'apt-file', 'update'], check=True, stdout=subprocess.DEVNULL)
         else:
             print("CAUTION: your system seems not to include a working version of apt.\nThis will cause the AppImage to leverage system libraries when run.")
             self.check_dependencies = False
@@ -237,12 +248,12 @@ class Build():
     def build(self):
         """Building all the versions."""
 
-        if self.verbose:
-            print("--- Building Phase ---")
-
         if self.found:
             return
 
+        if self.verbose:
+            print("--- Building Phase ---")
+
         # Preparation tasks
         self.appnamedir = os.path.join(self.builddir, self.appname)
         os.makedirs(self.appnamedir, exist_ok=True)
@@ -256,6 +267,13 @@ class Build():
 
         # Build the requested version.
         self.__unpackbuild__()
+        self.__prepare_contents__()
+        if self.check_dependencies:
+            if self.verbose:
+                print("Searching for dependent libraries, it might take a while.")
+
+            self.__missing_dependencies__()
+        self.__finalize_build__()
 
 
     def checksums(self):
@@ -505,6 +523,7 @@ class Build():
             subprocess.run(shlex.split(
                 f"tar xzf {self.download_path}/{archive}"), check=True)
 
+    def __prepare_contents__(self):
         # create appimagedir
         if self.verbose:
             print("---- Preparing the build ----")
@@ -512,6 +531,9 @@ class Build():
         os.makedirs(self.appimagedir, exist_ok = True)
 
         # At this point, let's decompress the deb packages
+        if self.verbose:
+            print("Unpacking main archives")
+
         subprocess.run(shlex.split(
             r"find .. -iname '*.deb' -exec dpkg -x {} . \;"
         ), cwd=self.appimagedir, check=True)
@@ -524,6 +546,9 @@ class Build():
             ), cwd=self.appimagedir, check=True)
 
         # Changing desktop file
+        if self.verbose:
+            print("Preparing .desktop file.")
+
         subprocess.run(shlex.split(
             r"find . -iname startcenter.desktop -exec cp {} . \;"
         ), cwd=self.appimagedir, check=True)
@@ -533,6 +558,8 @@ class Build():
             r"startcenter.desktop"
         ), cwd=self.appimagedir, check=False)
 
+        if self.verbose:
+            print("Preparing icon file.")
         subprocess.run(shlex.split(
             r"find . -name '*startcenter.png' -path '*hicolor*48x48*' " +
             r"-exec cp {} . \;"
@@ -542,62 +569,10 @@ class Build():
         cmd = subprocess.run(shlex.split(
             r"find -iname soffice.bin -print"
         ), cwd=self.appimagedir, check = True, capture_output=True)
-        main_executable = os.path.abspath(os.path.join(
+        self.main_executable = os.path.abspath(os.path.join(
             self.appimagedir, 
             cmd.stdout.strip().decode('utf-8')))
 
-        # If the system permits it, we leverage lddcollect
-        # to find the packages that contain .so dependencies in the main build.
-        if self.check_dependencies:
-            if self.verbose:
-                print("Checking for dependent libraries")
-
-            import lddcollect
-            # We first process the ELF
-            raw = lddcollect.process_elf(main_executable, verbose = False, dpkg = True)
-
-            # If all works as expected, we obtain a tuple of:
-            # (debian_packages, all_libraries, files_not_found)
-            (debian_packages, all_libraries, not_found) = raw
-
-            if len(debian_packages) != 0:
-                # We need, first, to download those packages.
-                debs = [ x.split(':')[0] for x in debian_packages ]
-                downloadpath = os.path.abspath(os.path.join(self.builddir, 'dependencies'))
-                os.makedirs(downloadpath)
-                
-                if self.verbose:
-                    print("Downloading missing dependencies, please wait.")
-
-                # Updating package cache
-                subprocess.run(['sudo', 'apt', 'update'], check=True)
-                # Updating apt-file cache
-                subprocess.run(['sudo', 'apt-file', 'update'], check=True)
-
-                # Let's try to find and install also other libraries
-                additional = list(dict.fromkeys([ libfinderhelper(x) for x in not_found ]))
-                debs.extend(additional)
-
-                # We download the missing dependencies leveraging apt
-                subprocess.run(shlex.split(
-                    r"apt download " + " ".join(debs)
-                ), cwd=downloadpath, check=True)
-
-                # then we install them inside a temporary path
-                temporary = os.path.abspath(os.path.join(downloadpath, 'temp'))
-                os.makedirs(temporary)
-                subprocess.run(shlex.split(
-                    r"find " + downloadpath + r" -iname \*.deb -exec dpkg -x {} " + temporary + r" \;"
-                ), cwd=self.builddir, check=True)
-
-                # We are finally copying the .so files in the same path as main_executable
-                libdirs = [ 'lib/x86_64-linux-gnu', 'usr/lib/x86_64-linux-gnu' ]
-                for libdir in libdirs:
-                    fulllibdir = os.path.abspath(os.path.join(temporary, libdir))
-                    subprocess.run(shlex.split(
-                        f"cp -Ra {fulllibdir}/. {os.path.dirname(main_executable)}/"
-                    ), cwd=temporary, check=True)
-
         # Find the name of the binary called in the desktop file.
         binaryname = ''
         with open(
@@ -621,6 +596,70 @@ class Build():
             r"-exec ln -sf {} ./%s \;" % binaryname
         ), cwd=bindir, check=True)
 
+    def __missing_dependencies__(self):
+        """Finds and copy in the appimagedir any missing libraries."""
+        # If the system permits it, we leverage lddcollect
+        # to find the packages that contain .so dependencies in the main build.
+        import lddcollect
+        # We first process the ELF
+        raw = lddcollect.process_elf(self.main_executable, verbose = False, dpkg = True)
+
+        # If all works as expected, we obtain a tuple of:
+        # (debian_packages, all_libraries, files_not_found)
+        (debian_packages, all_libraries, not_found) = raw
+
+        if len(debian_packages) != 0:
+            # Creating temporary folders
+            debs = [ x.split(':')[0] for x in debian_packages ]
+            downloadpath = os.path.abspath(os.path.join(self.builddir, 'dependencies'))
+            os.makedirs(downloadpath)
+            
+
+            if self.verbose:
+                print("Downloading missing dependencies, please wait.")
+
+            # Let's try to find and install also other libraries
+            additional = list(dict.fromkeys([ Helpers.lib_to_deb(x) for x in not_found ]))
+            debs.extend(additional)
+
+            # It seems the download command does not download dependencies of
+            # the packages.
+            if self.verbose:
+                print("Constructing the dependency tree.")
+
+            for deb in debian_packages:
+                debs.extend(Helpers.deb_dependencies(deb))
+
+            # Re-cleaning up the dependency tree
+            debs = list(dict.fromkeys(debs))
+
+            # We download the missing dependencies leveraging apt
+            subprocess.run(shlex.split(
+                r"apt download " + " ".join(debs)
+            ), cwd=downloadpath, check=True)
+
+            # then we install them inside a temporary path
+            temporary = os.path.abspath(os.path.join(downloadpath, 'temp'))
+            os.makedirs(temporary)
+            subprocess.run(shlex.split(
+                r"find " + downloadpath + r" -iname \*.deb -exec dpkg -x {} " + temporary + r" \;"
+            ), cwd=self.builddir, check=True)
+
+            # We are finally copying the .so files in the same path as main_executable
+            libdirs = [ 'lib/x86_64-linux-gnu', 'usr/lib/x86_64-linux-gnu' ]
+            for libdir in libdirs:
+                fulllibdir = os.path.abspath(os.path.join(temporary, libdir))
+                subprocess.run(shlex.split(
+                    f"cp -Ra {fulllibdir}/. {os.path.dirname(self.main_executable)}/"
+                ), cwd=temporary, check=True)
+
+            if self.debug:
+                with open(os.path.abspath(os.builddir, 'dependencies.lst'), 'w', encoding="utf-8") as deplist:
+                    deplist.write("\n".join(debs))
+
+    def __finalize_build__(self):
+        if self.verbose:
+            print("Finalizing build...")
         # Cleaning up AppDir
         cleanup_dirs = [ 'etc', 'lib', 'lib64', 'usr/lib', 'usr/local' ]
         for local in cleanup_dirs:
@@ -678,7 +717,27 @@ class Build():
             shutil.rmtree(self.builddir)
 
 
-def libfinderhelper(libraryname):
+class Helpers:
+
+    @staticmethod
+    def deb_dependencies(package_name):
+        """Returns the array of the dependencies of that package."""
+
+        # First pass: find dependency of that package in raw output
+        pass1 = subprocess.Popen(shlex.split(
+            f"apt-cache depends --recurse --no-recommends --no-suggests --no-conflicts --no-breaks --no-replaces --no-enhances --no-pre-depends {package_name}"
+        ), stdout=subprocess.PIPE)
+
+        # Second pass: only grep interesting lines.
+        pass2 = subprocess.Popen(shlex.split(
+            r"grep '^\w'"
+        ), stdin=pass1.stdout, stdout=subprocess.PIPE, encoding='utf-8')
+        stdout, stderr = pass2.communicate()
+
+        return stdout.strip().split("\n")
+
+    @staticmethod
+    def lib_to_deb(libraryname):
         """Uses system tools to identify the missing package."""
 
         libsearch = subprocess.run(shlex.split(