From c0482531fc16a55715b759b695d27d555d927ab8 Mon Sep 17 00:00:00 2001
From: EuAndreh <eu@euandre.org>
Date: Thu, 9 May 2024 16:27:40 -0300
Subject: src/cage: Add initial version taken from dotfiles

---
 Makefile  | 86 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 deps.mk   |  3 +++
 mkdeps.sh | 13 ++++++++++
 src/cage  | 12 +++++++++
 4 files changed, 114 insertions(+)
 create mode 100644 Makefile
 create mode 100644 deps.mk
 create mode 100755 mkdeps.sh
 create mode 100755 src/cage

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..156ba05
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,86 @@
+.POSIX:
+DATE         = 1970-01-01
+VERSION      = 0.1.0
+NAME         = cage
+NAME_UC      = $(NAME)
+LANGUAGES    = en
+## Installation prefix.  Defaults to "/usr".
+PREFIX       = /usr
+BINDIR       = $(PREFIX)/bin
+LIBDIR       = $(PREFIX)/lib
+INCLUDEDIR   = $(PREFIX)/include
+SRCDIR       = $(PREFIX)/src/$(NAME)
+SHAREDIR     = $(PREFIX)/share
+LOCALEDIR    = $(SHAREDIR)/locale
+MANDIR       = $(SHAREDIR)/man
+EXEC         = ./
+## Where to store the installation.  Empty by default.
+DESTDIR      =
+LDLIBS       =
+
+
+
+.SUFFIXES:
+
+
+
+all:
+include deps.mk
+
+sources = \
+	$(sources.sh)                  \
+
+
+derived-assets = \
+
+side-assets = \
+
+
+
+## Default target.  Builds all artifacts required for testing
+## and installation.
+all: $(derived-assets)
+
+
+
+check-unit:
+
+
+check-integration:
+
+
+## Run all tests.  Each test suite is isolated, so that a parallel
+## build can run tests at the same time.  The required artifacts
+## are created if missing.
+check: check-unit check-integration
+
+
+
+## Remove *all* derived artifacts produced during the build.
+## A dedicated test asserts that this is always true.
+clean:
+	rm -rf $(derived-assets) $(side-assets)
+
+
+## Installs into $(DESTDIR)$(PREFIX).  Its dependency target
+## ensures that all installable artifacts are crafted beforehand.
+install: all
+	mkdir -p \
+		'$(DESTDIR)$(BINDIR)'     \
+		'$(DESTDIR)$(SRCDIR)'
+	cp $(sources.sh)     '$(DESTDIR)$(BINDIR)'
+	cp $(sources.sh)     '$(DESTDIR)$(SRCDIR)'
+
+
+## Uninstalls from $(DESTDIR)$(PREFIX).  This is a perfect mirror
+## of the "install" target, and removes *all* that was installed.
+## A dedicated test asserts that this is always true.
+uninstall:
+	rm -rf \
+		'$(DESTDIR)$(SRCDIR)'
+	for f in $(sources.sh); do \
+		rm -f '$(DESTDIR)$(BINDIR)'/"$${f#src/}"; \
+	done
+
+
+ALWAYS:
diff --git a/deps.mk b/deps.mk
new file mode 100644
index 0000000..64cda8c
--- /dev/null
+++ b/deps.mk
@@ -0,0 +1,3 @@
+sources.sh = \
+	src/cage \
+
diff --git a/mkdeps.sh b/mkdeps.sh
new file mode 100755
index 0000000..8204798
--- /dev/null
+++ b/mkdeps.sh
@@ -0,0 +1,13 @@
+#!/bin/sh
+set -eu
+
+export LANG=POSIX.UTF-8
+
+varlist() {
+	printf '%s = \\\n' "$1"
+	sort | sed 's|^\(.*\)$|\t\1 \\|'
+	printf '\n'
+}
+
+
+find src/* -type f -perm -111 | varlist 'sources.sh'
diff --git a/src/cage b/src/cage
new file mode 100755
index 0000000..fe9686b
--- /dev/null
+++ b/src/cage
@@ -0,0 +1,12 @@
+#!/bin/sh
+set -eu
+
+
+# FIXME: this is Guix-specific...
+
+FLAG=''
+if [ -e manifest.scm ]; then
+	FLAG='-m manifest.scm'
+fi
+
+guix shell $FLAG --pure -C -- "$@"
-- 
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