treewide: remove git-and-tools directory

We do not use a "plugin system" for Git addons anymore, and therefore this
directory is no longer useful. Indeed that directory is way more confusing,
given that it includes more than mere Git addons, going from Bitbucket server
command-line tools to complete rewrites of Git in exotic programming languages.

Also, without this directory, the mental load of decision-making reduces a lot.
When anyone is interested in including a new git-related tool, just put it into
pkgs/applications/version-management, without apologies.

2 files changed, 87 insertions, 0 deletions

diff --git a/pkgs/applications/version-management/transcrypt/default.nix b/pkgs/applications/version-management/transcrypt/default.nix
new file mode 100644
index 0000000000000..3225744abc57c
--- /dev/null
+++ b/pkgs/applications/version-management/transcrypt/default.nix
@@ -0,0 +1,50 @@
+{ lib, stdenv, fetchFromGitHub, git, makeWrapper, openssl, coreutils, util-linux, gnugrep, gnused, gawk }:
+
+stdenv.mkDerivation rec {
+  pname = "transcrypt";
+  version = "1.1.0";
+
+  src = fetchFromGitHub {
+    owner = "elasticdog";
+    repo = "transcrypt";
+    rev = "v${version}";
+    sha256 = "1dkr69plk16wllk5bzlkchrzw63pk239dgbjhrb3mb61i065jdam";
+  };
+
+  nativeBuildInputs = [ makeWrapper ];
+  buildInputs = [ git openssl coreutils util-linux gnugrep gnused gawk ];
+
+  patches = [ ./helper-scripts_depspathprefix.patch ];
+
+  installPhase = ''
+    install -m 755 -D transcrypt $out/bin/transcrypt
+    install -m 644 -D man/transcrypt.1 $out/share/man/man1/transcrypt.1
+    install -m 644 -D contrib/bash/transcrypt $out/share/bash-completion/completions/transcrypt
+    install -m 644 -D contrib/zsh/_transcrypt $out/share/zsh/site-functions/_transcrypt
+
+    wrapProgram $out/bin/transcrypt \
+      --prefix PATH : "${lib.makeBinPath [ git openssl coreutils util-linux gnugrep gnused gawk ]}"
+
+    cat > $out/bin/transcrypt-depspathprefix << EOF
+    #!${stdenv.shell}
+    echo "${lib.makeBinPath [ git openssl coreutils gawk ]}:"
+    EOF
+    chmod +x $out/bin/transcrypt-depspathprefix
+  '';
+
+  meta = with lib; {
+    description = "Transparently encrypt files within a Git repository";
+    longDescription = ''
+      A script to configure transparent encryption of sensitive files stored in
+      a Git repository. Files that you choose will be automatically encrypted
+      when you commit them, and automatically decrypted when you check them
+      out. The process will degrade gracefully, so even people without your
+      encryption password can safely commit changes to the repository's
+      non-encrypted files.
+    '';
+    homepage = "https://github.com/elasticdog/transcrypt";
+    license = licenses.mit;
+    maintainers = [ maintainers.elasticdog ];
+    platforms = platforms.all;
+  };
+}
diff --git a/pkgs/applications/version-management/transcrypt/helper-scripts_depspathprefix.patch b/pkgs/applications/version-management/transcrypt/helper-scripts_depspathprefix.patch
new file mode 100644
index 0000000000000..925aadab3dd59
--- /dev/null
+++ b/pkgs/applications/version-management/transcrypt/helper-scripts_depspathprefix.patch
@@ -0,0 +1,37 @@
+diff --git a/transcrypt b/transcrypt
+index a0b562d..7888f5d 100755
+--- a/transcrypt
++++ b/transcrypt
+@@ -278,6 +278,7 @@ save_helper_scripts() {
+ 
+ 	cat <<-'EOF' > "${GIT_DIR}/crypt/clean"
+ 		#!/usr/bin/env bash
++		PATH="$(transcrypt-depspathprefix 2>/dev/null)$PATH"
+ 		filename=$1
+ 		# ignore empty files
+ 		if [[ -s $filename ]]; then
+@@ -300,6 +301,7 @@ save_helper_scripts() {
+ 
+ 	cat <<-'EOF' > "${GIT_DIR}/crypt/smudge"
+ 		#!/usr/bin/env bash
++		PATH="$(transcrypt-depspathprefix 2>/dev/null)$PATH"
+ 		tempfile=$(mktemp 2> /dev/null || mktemp -t tmp)
+ 		trap 'rm -f "$tempfile"' EXIT
+ 		cipher=$(git config --get --local transcrypt.cipher)
+@@ -309,6 +311,7 @@ save_helper_scripts() {
+ 
+ 	cat <<-'EOF' > "${GIT_DIR}/crypt/textconv"
+ 		#!/usr/bin/env bash
++		PATH="$(transcrypt-depspathprefix 2>/dev/null)$PATH"
+ 		filename=$1
+ 		# ignore empty files
+ 		if [[ -s $filename ]]; then
+@@ -351,7 +354,7 @@ save_configuration() {
+ 	git config merge.renormalize 'true'
+ 
+ 	# add a git alias for listing encrypted files
+-	git config alias.ls-crypt "!git ls-files | git check-attr --stdin filter | awk 'BEGIN { FS = \":\" }; /crypt$/{ print \$1 }'"
++	git config alias.ls-crypt "!PATH=\"\$(transcrypt-depspathprefix 2>/dev/null)\$PATH\"; git ls-files | git check-attr --stdin filter | awk 'BEGIN { FS = \":\" }; /crypt$/{ print \$1 }'"
+ }
+ 
+ # display the current configuration settings