Merge pull request #560 from bjornfor/eagle

eagle: new package
This commit is contained in:
Domen Kožar 2013-05-26 03:03:10 -07:00
commit e6878aae7b
3 changed files with 222 additions and 0 deletions

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{ stdenv, fetchurl, makeDesktopItem, patchelf, zlib, freetype, fontconfig
, openssl, libXrender, libXrandr, libXcursor, libX11, libXext, libXi
}:
let
libPath = stdenv.lib.makeLibraryPath
[ zlib freetype fontconfig openssl libXrender libXrandr libXcursor libX11
libXext libXi
];
in
stdenv.mkDerivation rec {
name = "eagle-${version}";
version = "6.4.0";
src = fetchurl {
url = "ftp://ftp.cadsoft.de/eagle/program/6.4/eagle-lin-${version}.run";
sha256 = "0jb44dsq4cl9rx5nam6rxsw9fsmm6fsksv9s544p2zrwnad2x2i8";
};
desktopItem = makeDesktopItem {
name = "Eagle";
exec = "eagle";
icon = "eagle";
comment = "Schematic capture and PCB layout";
desktopName = "Eagle";
genericName = "Schematic editor";
categories = "Application;Development;";
};
buildInputs =
[ patchelf zlib freetype fontconfig openssl libXrender libXrandr libXcursor
libX11 libXext libXi
];
phases = [ "installPhase" ];
# NOTES:
# Eagle for Linux comes as a self-extracting shell script with embedded
# tarball. The tarball data (.tar.bz2) starts after a __DATA__ marker.
#
# Eagle apparently doesn't like binary patching. This is what happens:
# $ ./result/eagle-6.4.0/bin/eagle
# argv[0] (/home/bfo/nixpkgs/result/eagle-6.4.0/bin/eagle) is not the currently executed program version!
installPhase = ''
# Extract eagle tarball
mkdir "$out"
sed '1,/^__DATA__$/d' "$src" | tar -xjf - -C "$out"
# Install manpage
mkdir -p "$out"/share/man/man1
ln -s "$out"/eagle-${version}/doc/eagle.1 "$out"/share/man/man1/eagle.1
# Build LD_PRELOAD library that redirects license file access to the home
# directory of the user
mkdir -p "$out"/lib
gcc -shared -fPIC -DEAGLE_PATH=\"$out/eagle-${version}\" ${./eagle_fixer.c} -o "$out"/lib/eagle_fixer.so -ldl
# Make wrapper script
dynlinker="$(cat $NIX_GCC/nix-support/dynamic-linker)"
mkdir -p "$out"/bin
cat > "$out"/bin/eagle << EOF
#!${stdenv.shell}
export LD_LIBRARY_PATH="${stdenv.gcc.gcc}/lib:${libPath}"
export LD_PRELOAD="$out/lib/eagle_fixer.so"
exec "$dynlinker" "$out/eagle-${version}/bin/eagle" "\$@"
EOF
chmod a+x "$out"/bin/eagle
# Make desktop item
mkdir -p "$out"/share/applications
cp "$desktopItem"/share/applications/* "$out"/share/applications/
mkdir -p "$out"/share/icons
ln -s "$out/eagle-${version}/bin/eagleicon50.png" "$out"/share/icons/eagle.png
'';
meta = with stdenv.lib; {
description = "Schematic editor and PCB layout tool from CadSoft";
homepage = http://www.cadsoftusa.com/;
license = licenses.unfree;
platforms = platforms.linux;
maintainers = [ maintainers.bjornfor ];
};
}

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/*
* LD_PRELOAD trick to make Eagle (schematic editor and PCB layout tool from
* CadSoft) work from a read-only installation directory.
*
* When Eagle starts, it looks for the license file in <eagle>/bin/eagle.key
* (where <eagle> is the install path). If eagle.key is not found, Eagle checks
* for write access to <eagle>/bin/, shows a license dialog to the user and
* then attempts to write a license file to <eagle>/bin/.
*
* This will of course fail when Eagle is installed in the read-only Nix store.
* Hence this library that redirects accesses to the those paths in the
* following way:
*
* <eagle>/bin => $HOME
* <eagle>/bin/eagle.key => $HOME/.eagle.key
*
* Also, if copying an example project to ~/eagle/ (in the Eagle GUI), Eagle
* chmod's the destination with read-only permission bits (presumably because
* the source is read-only) and fails to complete the copy operation.
* Therefore, the mode argument in calls to chmod() is OR'ed with the S_IWUSR
* bit (write by owner).
*
* Usage:
* gcc -shared -fPIC -DEAGLE_PATH="$out/eagle-${version}" eagle_fixer.c -o eagle_fixer.so -ldl
* LD_PRELOAD=$PWD/eagle_fixer.so ./result/bin/eagle
*
* To see the paths that are modified at runtime, set the environment variable
* EAGLE_FIXER_DEBUG to 1.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <dlfcn.h>
#include <limits.h>
#include <sys/stat.h>
#ifndef EAGLE_PATH
#error Missing EAGLE_PATH, path to the eagle-${version} installation directory.
#endif
typedef FILE *(*fopen_func_t)(const char *path, const char *mode);
typedef int (*access_func_t)(const char *pathname, int mode);
typedef int (*chmod_func_t)(const char *path, mode_t mode);
/*
* Map <eagle>/bin to $HOME and <eagle>/bin/eagle.key to $HOME/.eagle.key
*
* Path is truncated if bigger than PATH_MAX. It's not threadsafe, but that's
* OK.
*/
static const char *redirect(const char *pathname)
{
static char buffer[PATH_MAX];
const char *homepath;
const char *new_path;
static int have_warned;
homepath = getenv("HOME");
if (!homepath) {
homepath = "/";
if (!have_warned && getenv("EAGLE_FIXER_DEBUG")) {
fprintf(stderr, "eagle_fixer: HOME is unset, using \"/\" (root) instead.\n");
have_warned = 1;
}
}
new_path = pathname;
if (strcmp(EAGLE_PATH "/bin", pathname) == 0) {
/* redirect to $HOME */
new_path = homepath;
} else if (strcmp(EAGLE_PATH "/bin/eagle.key", pathname) == 0) {
/* redirect to $HOME/.eagle.key */
snprintf(buffer, PATH_MAX, "%s/.eagle.key", homepath);
buffer[PATH_MAX-1] = '\0';
new_path = buffer;
}
return new_path;
}
FILE *fopen(const char *pathname, const char *mode)
{
FILE *fp;
const char *path;
fopen_func_t orig_fopen;
orig_fopen = (fopen_func_t)dlsym(RTLD_NEXT, "fopen");
path = redirect(pathname);
fp = orig_fopen(path, mode);
if (path != pathname && getenv("EAGLE_FIXER_DEBUG")) {
fprintf(stderr, "eagle_fixer: fopen(\"%s\", \"%s\") => \"%s\": fp=%p\n", pathname, mode, path, fp);
}
return fp;
}
int access(const char *pathname, int mode)
{
int ret;
const char *path;
access_func_t orig_access;
orig_access = (access_func_t)dlsym(RTLD_NEXT, "access");
path = redirect(pathname);
ret = orig_access(path, mode);
if (path != pathname && getenv("EAGLE_FIXER_DEBUG")) {
fprintf(stderr, "eagle_fixer: access(\"%s\", %d) => \"%s\": ret=%d\n", pathname, mode, path, ret);
}
return ret;
}
int chmod(const char *pathname, mode_t mode)
{
int ret;
mode_t new_mode;
chmod_func_t orig_chmod;
orig_chmod = (chmod_func_t)dlsym(RTLD_NEXT, "chmod");
new_mode = mode | S_IWUSR;
ret = orig_chmod(pathname, new_mode);
if (getenv("EAGLE_FIXER_DEBUG")) {
fprintf(stderr, "eagle_fixer: chmod(\"%s\", %o) => %o: ret=%d\n", pathname, mode, new_mode, ret);
}
return ret;
}

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@ -8971,6 +8971,8 @@ let
### SCIENCE / ELECTRONICS
eagle = callPackage_i686 ../applications/science/electronics/eagle { };
caneda = callPackage ../applications/science/electronics/caneda { };
gtkwave = callPackage ../applications/science/electronics/gtkwave { };